Opinions from O. P. Hay 1930

  • 'Accipiter belongs to Accipitrinae'
  • 'Accipitrinae belongs to Buteonidae'
  • 'Acherontemys belongs to Chelydridae'
  • 'Acherontemys heckmani belongs to Acherontemys'
  • 'Achilemys belongs to Testudinidae'
  • 'Aciprion belongs to Iguanidae'
  • 'Aciprion formosum belongs to Aciprion'
  • 'Aciprion majus belongs to Aciprion'
  • 'Acompsosaurus belongs to Desmatosuchidae'
  • 'Acompsosaurus wingatensis belongs to Acompsosaurus'
  • 'Acrodelphis belongs to Delphininae'
  • 'Adocidae is a subjective synonym of Dermatemydidae'
  • 'Adocus belongs to Dermatemydidae'
  • 'Adocus agilis belongs to Adocus'
  • 'Adocus bossi belongs to Adocus'
  • 'Adocus hesperius belongs to Adocus'
  • 'Adocus kirtlandius belongs to Adocus'
  • 'Adocus lacer belongs to Adocus'
  • 'Adocus lineolatus belongs to Adocus'
  • 'Adocus onerosus belongs to Adocus'
  • 'Adocus petrosus is recombined as Agomphus petrosus'
  • 'Adocus punctatus belongs to Adocus'
  • 'Adocus syntheticus belongs to Adocus'
  • 'Adocus vigoratus belongs to Adocus' according to Hay 1910
  • 'Adocus vigoratus belongs to Adocus'
  • 'Aechmophorus belongs to Colymbidae'
  • 'Aechmophorus lucasi belongs to Aechmophorus'
  • 'Aegypiinae was reranked as the family Aegypiidae and belongs to Falconoidae'
  • 'Aetosauridae belongs to Aetosauriformes'
  • 'Aetosauriformes belongs to Phytosauromorphi'
  • 'Agabelus belongs to Delphininae'
  • 'Agabelus porcatus belongs to Agabelus'
  • 'Agama collaris is recombined as Crotaphytus collaris'
  • 'Agathaumas belongs to Ceratopsidae'
  • 'Agathaumas sylvestris belongs to Agathaumas'
  • 'Agelaius belongs to Icteridae'
  • 'Agomphus belongs to Dermatemydidae'
  • 'Agomphus alabamensis belongs to Agomphus'
  • 'Agomphus masculinus belongs to Agomphus'
  • 'Agomphus tardus belongs to Agomphus'
  • 'Agorophiidae belongs to Odontocete'
  • 'Agorophius belongs to Agorophiidae'
  • 'Agostopus matheri belongs to Agostopus' according to Gilmore 1926
  • 'Agostopus matheri belongs to Agostopus'
  • 'Agostopus medius belongs to Agostopus' according to Gilmore 1927
  • 'Agostopus medius belongs to Agostopus'
  • 'Agriocharis belongs to Meleagridae'
  • 'Aix belongs to Anatinae'
  • 'Ajaja [misspelled as Ajaia] belongs to Plataleidae'
  • 'Alamosaurus belongs to Diplodocidae'
  • 'Alamosaurus sanjuanensis belongs to Alamosaurus'
  • 'Alamosemys belongs to Dermatemydidae'
  • 'Alamosemys annexa belongs to Alamosemys' according to Hay 1910
  • 'Alamosemys annexa belongs to Alamosemys'
  • 'Alamosemys substricta belongs to Alamosemys'
  • 'Alauda alpestris is recombined as Otocoris alpestris'
  • 'Alauda magna is recombined as Sturnella magna'
  • 'Alaudidae belongs to Fringilloidae'
  • 'Albertosaurus belongs to Deinodontinae'
  • 'Albertosaurus arctunguis belongs to Albertosaurus'
  • 'Albertosaurus sarcophagus belongs to Albertosaurus'
  • 'Alca antiqua is recombined as Synthliboramphus antiquus'
  • 'Alca impennis is recombined as Pinguinus impennis'
  • 'Alca monocerata is recombined as Cerorhinca monocerata'
  • 'Alcidae belongs to Alcoidae'
  • 'Alcinae belongs to Alcidae'
  • 'Alcoidea is corrected as Alcoidae and belongs to Charadriiformes'
  • 'Alethesaurus belongs to Sauria'
  • 'Alethesaurus quadratus belongs to Alethesaurus'
  • 'Aletornis belongs to Gruinae'
  • 'Aletornis bellus belongs to Aletornis'
  • 'Aletornis gracilis belongs to Aletornis'
  • 'Aletornis marshi is recombined as Grus marshi'
  • 'Aletornis nobilis belongs to Aletornis'
  • 'Aletornis pernix belongs to Aletornis'
  • 'Aletornis venustus belongs to Aletornis'
  • 'Allacodon belongs to Ptilodontidae'
  • 'Allacodon fortis belongs to Allacodon'
  • 'Allacodon lentus belongs to Allacodon'
  • 'Allacodon pumilus [misspelled as Allacodon pumilis] belongs to Allacodon'
  • 'Allacodon rarus belongs to Allacodon'
  • 'Alligator belongs to Crocodylidae'
  • 'Alligator heterodon is recombined as Allognathosuchus heterodon'
  • 'Alligator thomsoni belongs to Alligator'
  • 'Alligatoridae is a subjective synonym of Crocodylidae'
  • 'Allodesmus belongs to Otariidae'
  • 'Allodesmus kernensis belongs to Allodesmus'
  • 'Allodon is a subjective synonym of Ctenacodon'
  • 'Allodon fortis is recombined as Psalodon fortis'
  • 'Allodon laticeps is recombined as Ctenacodon laticeps'
  • 'Allognathosuchus belongs to Crocodylidae'
  • 'Allognathosuchus wartheni belongs to Allognathosuchus'
  • 'Allopus littoralis belongs to Allopus'
  • 'Allosaurus is a subjective synonym of Antrodemus'
  • 'Allosaurus fragilis is a subjective synonym of Antrodemus valens'
  • 'Allosaurus lucaris is recombined as Labrosaurus lucaris'
  • 'Allosaurus medius is recombined as Dryptosaurus medius'
  • 'Allotheria was reranked as a subclass and belongs to Mammalia'
  • 'Amblonyx is a subjective synonym of Fulicopus'
  • 'Amblonyx giganteus is recombined as Fulicopus giganteus'
  • 'Amblotherium belongs to Dryolestidae'
  • 'Amblotherium debilis is corrected as Amblotherium debile and belongs to Amblotherium'
  • 'Amblotherium soricinum belongs to Amblotherium'
  • 'Amblyopus pachypodus belongs to Amblyopus' according to Gilmore 1927
  • 'Amblyopus pachypodus belongs to Amblyopus'
  • 'Amblypeza belongs to Bothremydidae'
  • 'Amblypeza entellus belongs to Amblypeza'
  • 'Amblypus dextratus belongs to Amblypus'
  • 'Ammobatrachus montanensis belongs to Ammobatrachus' according to Gilmore 1928
  • 'Ammobatrachus montanensis belongs to Ammobatrachus'
  • 'Ammobatrachus turbatans belongs to Ammobatrachus' according to Gilmore 1928
  • 'Ammobatrachus turbatans belongs to Ammobatrachus'
  • 'Ammopus marshi belongs to Ammopus'
  • 'Ammosaurus belongs to Anchisauridae'
  • 'Amphichelydia is replaced by Pleurosternoidae'
  • 'Amphicoelias belongs to Diplodocidae'
  • 'Amphicoelias altus belongs to Amphicoelias'
  • 'Amphicoelias fragillimus belongs to Amphicoelias'
  • 'Amphicoelias latus belongs to Amphicoelias'
  • 'Amphicotylus lucasii is recombined as Goniopholis lucasii'
  • 'Amphidon belongs to Amphidontidae'
  • 'Amphidon aequicrurius belongs to Amphidon'
  • 'Amphidon superstes belongs to Amphidon'
  • 'Amphidontidae belongs to Symmetrodonta'
  • 'Amphiemys oxysternum is recombined as Agomphus oxysternum'
  • 'Amphilestinae belongs to Triconodontidae'
  • 'Amphisbaenidae belongs to Scincoidae'
  • 'Amphorosteus brumbyi is recombined as Mosasaurus brumbyi'
  • 'Amyda belongs to Trionychidae'
  • 'Amyda aequa belongs to Amyda'
  • 'Amyda crassa belongs to Amyda'
  • 'Amyda egregia belongs to Amyda'
  • 'Amyda eloisae belongs to Amyda'
  • 'Amyda exquisita belongs to Amyda'
  • 'Amyda franciscae belongs to Amyda'
  • 'Amyda mira belongs to Amyda'
  • 'Amyda nelsoni belongs to Amyda'
  • 'Amyda salebrosa belongs to Amyda'
  • 'Anas belongs to Anatinae'
  • 'Anas acuta is recombined as Dafila acuta'
  • 'Anas albeola is recombined as Charitonetta albeola'
  • 'Anas americana is recombined as Mareca americana'
  • 'Anas anser is recombined as Anser anser'
  • 'Anas bernicla is recombined as Branta bernicla'
  • 'Anas boschas is a subjective synonym of Anas platyrhynchos'
  • 'Anas caerulescens is recombined as Chen caerulescens'
  • 'Anas canadensis is recombined as Branta canadensis'
  • 'Anas carolinensis is recombined as Nettion carolinense'
  • 'Anas clangula is recombined as Clangula clangula'
  • 'Anas clypeata is recombined as Spatula clypeata'
  • 'Anas collaris is recombined as Marila collaris'
  • 'Anas columbianus is recombined as Cygnus columbianus'
  • 'Anas crecca is recombined as Nettion crecca'
  • 'Anas cyanoptera is recombined as Querquedula cyanoptera'
  • 'Anas cygnus is recombined as Cygnus cygnus'
  • 'Anas discors is recombined as Querquedula discors'
  • 'Anas histrionicus is recombined as Histrionicus histrionicus'
  • 'Anas hyemalis is recombined as Clangula hyemalis'
  • 'Anas hyperboreus is recombined as Chen hyperboreus'
  • 'Anas islandica is recombined as Clangula islandica'
  • 'Anas jamaicensis is recombined as Erismatura jamaicensis'
  • 'Anas marila is recombined as Marila marila'
  • 'Anas nigra is recombined as Oidemia nigra'
  • 'Anas penelope is recombined as Mareca penelope'
  • 'Anas perspicillata is recombined as Oidemia perspicillata'
  • 'Anas platyrhynchos belongs to Anas'
  • 'Anas querquedula is recombined as Querquedula querquedula'
  • 'Anas rubidus belongs to Anas' according to Wilson 1814
  • 'Anas rubidus is a subjective synonym of Erismatura jamaicensis'
  • 'Anas sponsa is recombined as Aix sponsa'
  • 'Anas stelleri is recombined as Polysticta stelleri'
  • 'Anas strepera is recombined as Chaulelasmus streperus'
  • 'Anas valisineria is recombined as Marila valisineria'
  • 'Anatidae belongs to Anatoidae'
  • 'Anatiformes belongs to Carinatae'
  • 'Anatinae belongs to Anatidae'
  • 'Anatoidea is corrected as Anatoidae and belongs to Anatiformes'
  • 'Anchiceratops belongs to Ceratopsidae'
  • 'Anchiceratops ornatus belongs to Anchiceratops'
  • 'Anchisauridae belongs to Megalosauroidae'
  • 'Anchisauripus hitchcocki belongs to Anchisauripus'
  • 'Anchisaurus belongs to Anchisauridae'
  • 'Anchisaurus colurus belongs to Anchisaurus'
  • 'Anchisaurus major is recombined as Ammosaurus major'
  • 'Anchisaurus solus belongs to Anchisaurus'
  • 'Ancylocentrum belongs to Platecarpinae'
  • 'Angistorhinus belongs to Phytosauridae'
  • 'Angistorhinus gracilis belongs to Angistorhinus'
  • 'Angistorhinus grandis belongs to Angistorhinus'
  • 'Angistorhinus maximus belongs to Angistorhinus'
  • 'Anguidae belongs to Anguioidae'
  • 'Anguiformes was reranked as a suborder and belongs to Sauria'
  • 'Anguioidea is corrected as Anguioidae and belongs to Anguiformes'
  • 'Anguoidea belongs to Anguiformes'
  • 'Animasaurus belongs to Diadectidae'
  • 'Animasaurus carinatus belongs to Animasaurus'
  • 'Anisichnus is a subjective synonym of Batrachopus'
  • 'Anisopus gracilior is recombined as Batrachopus gracilior'
  • 'Ankylosauridae belongs to Stegosauroidae'
  • 'Ankylosaurus belongs to Ankylosauridae'
  • 'Ankylosaurus magniventris belongs to Ankylosaurus'
  • 'Anomalopus sturdevanti belongs to Anomalopus' according to Gilmore 1927
  • 'Anomalopus sturdevanti belongs to Anomalopus'
  • 'Anomodontia belongs to Elpidosauria'
  • 'Anomoepus cuneatus belongs to Anomoepus'
  • 'Anomoepus giganteus belongs to Anomoepus'
  • 'Anomoepus intermedius belongs to Anomoepus'
  • 'Anomoepus isodactylus belongs to Anomoepus'
  • 'Anomoepus major belongs to Anomoepus'
  • 'Anomoepus minimus belongs to Anomoepus'
  • 'Anomoepus scambus belongs to Anomoepus'
  • 'Anoplonassa belongs to Ziphiinae'
  • 'Anoplonassa forcipata belongs to Anoplonassa'
  • 'Anosteira belongs to Anosteiridae'
  • 'Anosteira ornata belongs to Anosteira'
  • 'Anosteira radulina belongs to Anosteira'
  • 'Anosteirinae was reranked as the family Anosteiridae and belongs to Emydoidae'
  • 'Anostira molopina is recombined as Plastomenus molopinus'
  • 'Anostira oedemia is recombined as Plastomenus oedemius'
  • 'Anostira trionychoides is recombined as Platypeltis trionychoides'
  • 'Anser belongs to Anserinae'
  • 'Anser albifrons belongs to Anser'
  • 'Anser condoni belongs to Anser'
  • 'Anser hypsibata is recombined as Branta hypsibata'
  • 'Anseres is a subjective synonym of Anatiformes'
  • 'Anserinae belongs to Anatidae'
  • 'Anthracopus ellangowensis belongs to Anthracopus'
  • 'Anticheiropus hamatus belongs to Anticheiropus'
  • 'Anticheiropus pilulatus belongs to Anticheiropus'
  • 'Antipus bifidus belongs to Antipus'
  • 'Antipus flexiloquus belongs to Antipus'
  • 'Antrodemus belongs to Megalosauridae'
  • 'Apatichnus bellus is recombined as Batrachopus bellus'
  • 'Apatichnus circumagens belongs to Apatichnus'
  • 'Apatichnus crassus is recombined as Anomoepus crassus'
  • 'Apatichnus curvatus is recombined as Anomoepus curvatus'
  • 'Apatichnus holyokensis belongs to Apatichnus'
  • 'Apatodon belongs to Diplodocidae'
  • 'Apatodon mirus belongs to Apatodon'
  • 'Apatodonosaurus belongs to Ophthalmosauridae'
  • 'Apatodonosaurus grayi belongs to Apatodonosaurus'
  • 'Apatomerus belongs to Reptilia'
  • 'Apatomerus mirus belongs to Apatomerus'
  • 'Apatornis belongs to Ichthyornithidae'
  • 'Apatosaurus belongs to Atlantosauridae'
  • 'Apatosaurus ajax belongs to Apatosaurus'
  • 'Morosaurus grandis is a subjective synonym of Camarasaurus impar'
  • 'Apatosaurus laticollis belongs to Apatosaurus'
  • 'Apatosaurus louisae belongs to Apatosaurus'
  • 'Apatosaurus minimus belongs to Apatosaurus'
  • 'Aphelophis belongs to Boidae'
  • 'Aphelophis talpivorus belongs to Aphelophis'
  • 'Aploconodon belongs to Amphilestinae'
  • 'Aploconodon comoensis belongs to Aploconodon'
  • 'Aquila belongs to Buteoninae'
  • 'Aquila antiqua belongs to Aquila'
  • 'Aquila dananus is recombined as Geranoaetus danana'
  • 'Aquila ferox belongs to Aquila'
  • 'Aquila lydekkeri belongs to Aquila'
  • 'Aquila pliogryps belongs to Aquila'
  • 'Aquila sodalis belongs to Aquila'
  • 'Aquilinae is a subjective synonym of Buteoninae'
  • 'Arachichnus dehiscens belongs to Arachichnus'
  • 'Araeoscelidae belongs to Araeoscelomorphi'
  • 'Araeoscelis belongs to Araeoscelidae'
  • 'Araeoscelis gracilis belongs to Araeoscelis'
  • 'Araeoscelomorphi belongs to Squamata'
  • 'Aramidae belongs to Gruiformes'
  • 'Aramornis belongs to Aramidae'
  • 'Aramornis longurio belongs to Aramornis'
  • 'Archaeobelus belongs to Reptilia'
  • 'Archaeobelus vellicatus belongs to Archaeobelus'
  • 'Archaeoceti is replaced by Zeuglodontes'
  • 'Archaeodelphis belongs to Balaeninae'
  • 'Archaeodelphis patrius belongs to Archaeodelphis'
  • 'Archaeopterygidae belongs to Archaeopterygomorphi'
  • 'Archaeopterygomorphi belongs to Saururae'
  • 'Archaeopteryx belongs to Archaeopterygidae'
  • 'Archaeornithes is a subjective synonym of Saururae'
  • 'Archaeotrigon belongs to Paurodontidae'
  • 'Archaeotrigon brevimaxillus belongs to Archaeotrigon'
  • 'Archelon belongs to Protostegidae'
  • 'Archelon ischyros belongs to Archelon'
  • 'Archelon marshii belongs to Archelon'
  • 'Archeria belongs to Cotylosauria'
  • 'Archeria robinsoni belongs to Archeria'
  • 'Archibuteo belongs to Buteoninae'
  • 'Arctosaurus belongs to Anchisauridae'
  • 'Arctosaurus osborni belongs to Arctosaurus'
  • 'Ardea belongs to Ardeinae'
  • 'Ardea americana is recombined as Grus americanus'
  • 'Ardea canadensis is recombined as Grus canadensis'
  • 'Ardea cinerea belongs to Ardea'
  • 'Ardea egretta is recombined as Herodias egretta'
  • 'Ardea grus is recombined as Grus grus'
  • 'Ardea herodias belongs to Ardea'
  • 'Ardea lentiginosa is recombined as Botaurus lentiginosus'
  • 'Ardea mexicana belongs to Ardea' according to Müller 1776
  • 'Ardea mexicana is recombined as Grus mexicanus'
  • 'Ardea paloccidentalis belongs to Ardea'
  • 'Ardea sellardsi belongs to Ardea'
  • 'Ardea stellaris is recombined as Botaurus stellaris'
  • 'Ardeidae belongs to Ardeoidae'
  • 'Ardeinae belongs to Ardeidae'
  • 'Ardeoidea is corrected as Ardeoidae and belongs to Ciconiiformes'
  • 'Argozoum is a subjective synonym of Argoides'
  • 'Argozoum disparidigitatum is a subjective synonym of Argoides macrodactylotus'
  • 'Argozoum paridigitatum is a subjective synonym of Argoides isodactyletus'
  • 'Argyrocetus belongs to Eurhinodelphinae'
  • 'Arrhinoceratops belongs to Ceratopsidae'
  • 'Arrhinoceratops brachyops belongs to Arrhinoceratops'
  • 'Arribasaurus belongs to Poliosauridae'
  • 'Artiodactylus sinclairi belongs to Artiodactylus'
  • 'Asio belongs to Strigidae'
  • 'Asio asio belongs to Asio' according to Brisson 1760
  • 'Asio asio belongs to Asio'
  • 'Asperipes avipes belongs to Asperipes'
  • 'Asperipes flexilis belongs to Asperipes'
  • 'Aspideretes belongs to Trionychidae'
  • 'Aspideretes allani belongs to Aspideretes'
  • 'Aspideretes amnigenus belongs to Aspideretes'
  • 'Aspideretes austerus belongs to Aspideretes'
  • 'Aspideretes beecheri belongs to Aspideretes'
  • 'Aspideretes ellipticus belongs to Aspideretes'
  • 'Aspideretes fontanus belongs to Aspideretes'
  • 'Aspideretes gangeticus belongs to Aspideretes'
  • 'Aspideretes grangeri belongs to Aspideretes'
  • 'Aspideretes granifer belongs to Aspideretes'
  • 'Aspideretes lancensis belongs to Aspideretes'
  • 'Aspideretes latus belongs to Aspideretes'
  • 'Aspideretes maturus belongs to Aspideretes'
  • 'Aspideretes nassau belongs to Aspideretes'
  • 'Aspideretes perplexus belongs to Aspideretes'
  • 'Aspideretes puercensis belongs to Aspideretes'
  • 'Aspideretes quadratus belongs to Aspideretes'
  • 'Aspideretes reesidei belongs to Aspideretes'
  • 'Aspideretes sagatus belongs to Aspideretes'
  • 'Aspideretes splendidus belongs to Aspideretes'
  • 'Aspideretes subquadratus belongs to Aspideretes'
  • 'Aspideretes vegetus belongs to Aspideretes'
  • 'Aspideretes vorax belongs to Aspideretes'
  • 'Aspidonectes tritor is recombined as Amyda tritor'
  • 'Astatoglyptica belongs to Poeciloglyptica'
  • 'Asthenodon is a subjective synonym of Dryolestes'
  • 'Asthenodon segnis is a subjective synonym of Dryolestes priscus'
  • 'Astrodon belongs to Camarasauridae'
  • 'Astrodon johnstoni belongs to Astrodon'
  • 'Athecae belongs to Testudinata'
  • 'Athene whitneyi belongs to Athene' according to Cooper 1861
  • 'Athene whitneyi is recombined as Micropallas whitneyi'
  • 'Atlantochelys belongs to Desmatochelyidae'
  • 'Atlantochelys mortoni belongs to Atlantochelys'
  • 'Atlantosauridae belongs to Sauropoda'
  • 'Atlantosaurus belongs to Atlantosauridae'
  • 'Atlantosaurus immanis belongs to Atlantosaurus'
  • 'Atremata belongs to Reptilia'
  • 'Aublysodon is a subjective synonym of Deinodon'
  • 'Aublysodon amplus is recombined as Tyrannosaurus amplus'
  • 'Aublysodon lateralis is recombined as Deinodon lateralis'
  • 'Aublysodon mirandus is a subjective synonym of Deinodon horridus'
  • 'Aulophyseter belongs to Physeteridae'
  • 'Aulophyseter morricei belongs to Aulophyseter'
  • 'Aves belongs to Vertebrata'
  • 'Axestemys belongs to Trionychidae'
  • 'Axestus byssinus is recombined as Axestemys byssinus'
  • 'Baena belongs to Baenidae'
  • 'Baena antiqua belongs to Baena'
  • 'Baena arenosa belongs to Baena'
  • 'Baena callosa belongs to Baena'
  • 'Baena cephalica is recombined as Eubaena cephalica'
  • 'Baena clara belongs to Baena'
  • 'Baena emiliae belongs to Baena'
  • 'Baena escavada belongs to Baena'
  • 'Baena gigantea belongs to Baena'
  • 'Baena hayi belongs to Baena'
  • 'Baena hebraica is recombined as Chisternon hebraicum'
  • 'Baena inflata belongs to Baena'
  • 'Baena marshi belongs to Baena'
  • 'Baena nodosa belongs to Baena'
  • 'Baena platyplastra belongs to Baena'
  • 'Baena pulchra is recombined as Boremys pulchra'
  • 'Baena riparia belongs to Baena'
  • 'Baena sima belongs to Baena'
  • 'Baena undata is recombined as Chisternon undatum'
  • 'Baenidae belongs to Thecophora'
  • 'Balaena belongs to Balaeninae'
  • 'Balaena affinis belongs to Balaena'
  • 'Balaena mysticetoides is recombined as Megaptera mysticetoides'
  • 'Balaena nodosa is recombined as Megaptera nodosa'
  • 'Balaena palaeatlantica is recombined as Rhegnopsis palaeatlanticus'
  • 'Balaena prisca is recombined as Siphonocetus priscus'
  • 'Balaeninae belongs to Balaenidae'
  • 'Balaenodon belongs to Physeteridae'
  • 'Balaenodon physaloides belongs to Balaenodon'
  • 'Balaenoidea [misspelled as Balaenoidae] belongs to Mysticete'
  • 'Balaenoptera belongs to Balaenopterinae'
  • 'Balaenoptera ryani belongs to Balaenoptera'
  • 'Balaenoptera sursiplana belongs to Balaenoptera'
  • 'Balaenopteridae belongs to Balaenoidae'
  • 'Balaenopterinae belongs to Balaenopteridae'
  • 'Balaenula belongs to Balaeninae'
  • 'Balanadae is corrected as Balaenidae and belongs to Balaenoidae'
  • 'Baptanodon is a subjective synonym of Ophthalmosaurus'
  • 'Baptanodon marshi is recombined as Ophthalmosaurus marshi'
  • 'Baptanodon reedi is recombined as Ophthalmosaurus reedi'
  • 'Baptanodon robustus is recombined as Ophthalmosaurus robustus'
  • 'Baptemys belongs to Dermatemydidae'
  • 'Baptemys fluviatilis belongs to Baptemys'
  • 'Baptemys tricarinata belongs to Baptemys'
  • 'Baptornis belongs to Hesperornithidae'
  • 'Baptornis advenus belongs to Baptornis'
  • 'Baptosaurus belongs to Mosasaurinae'
  • 'Baptosaurus onchognathus belongs to Baptosaurus'
  • 'Barillopus arctus belongs to Barillopus'
  • 'Barillopus confusus belongs to Barillopus'
  • 'Barillopus unguifer belongs to Barillopus'
  • 'Baropezia abscissa belongs to Baropezia'
  • 'Baropezia eakini belongs to Baropezia' according to Gilmore 1926
  • 'Baropezia eakini belongs to Baropezia'
  • 'Baropus coconinoensis belongs to Baropus' according to Gilmore 1927
  • 'Baropus coconinoensis belongs to Baropus'
  • 'Baropus lentus belongs to Baropus'
  • 'Barornis belongs to Diatrymatidae'
  • 'Barornis regens belongs to Barornis'
  • 'Barosaurus belongs to Diplodocidae'
  • 'Barosaurus affinis belongs to Barosaurus'
  • 'Barosaurus lentus belongs to Barosaurus'
  • 'Barypodus metszeri belongs to Barypodus' according to Gilmore 1927
  • 'Barypodus metszeri belongs to Barypodus'
  • 'Barypodus palmatus belongs to Barypodus'
  • 'Barypodus tridactylus belongs to Barypodus' according to Gilmore 1927
  • 'Barypodus tridactylus belongs to Barypodus'
  • 'Bascanion is a subjective synonym of Coluber'
  • 'Basilemys belongs to Dermatemydidae'
  • 'Basilemys nobilis belongs to Basilemys'
  • 'Basilemys praeclara is corrected as Basilemys praeclarus and belongs to Basilemys'
  • 'Basilemys sinuosa is corrected as Basilemys sinuosus and belongs to Basilemys'
  • 'Basilosauridae belongs to Zeuglodontes'
  • 'Basilosaurus belongs to Basilosauridae'
  • 'Bathornis belongs to Bathornithinae'
  • 'Bathornis veredus belongs to Bathornis'
  • 'Bathornithidae was reranked as the subfamily Bathornithinae and belongs to Oedicnemidae'
  • 'Bathrodon typus is recombined as Microsyops typus'
  • 'Bathyglyptus belongs to Cotylosauria'
  • 'Bathyglyptus theodori belongs to Bathyglyptus'
  • 'Bathygnathus belongs to Sphenacodontidae'
  • 'Bathygnathus borealis belongs to Bathygnathus'
  • 'Batrachichnus delicatulus belongs to Batrachichnus'
  • 'Batrachichnus obscurus belongs to Batrachichnus' according to Gilmore 1927
  • 'Batrachichnus obscurus belongs to Batrachichnus'
  • 'Batrachichnus plainvillensis belongs to Batrachichnus'
  • 'Batrachoides antiquior belongs to Batrachoides'
  • 'Batrachoides nidificans belongs to Batrachoides'
  • 'Batrachoidichnites is a subjective synonym of Batrachopus'
  • 'Batrachopus dispar belongs to Batrachopus'
  • 'Batrachopus gracilis belongs to Batrachopus'
  • 'Belemnoziphius belongs to Ziphiinae'
  • 'Belemnoziphius prorops belongs to Belemnoziphius'
  • 'Belodon buceros is recombined as Machaeroprosopus buceros'
  • 'Belodon lepturus is recombined as Phytosaurus lepturus'
  • 'Belodon scolopax is recombined as Phytosaurus scolopax'
  • 'Belodon superciliosus is recombined as Phytosaurus superciliosus'
  • 'Belodon validus is recombined as Phytosaurus validus'
  • 'Belosphys belongs to Delphininae'
  • 'Bipezia bilobata belongs to Bipezia' according to Matthew 1910
  • 'Bipezia bilobata belongs to Bipezia'
  • 'Bison alticornis is recombined as Triceratops alticornis'
  • 'Boavus belongs to Boidae'
  • 'Boavus agilis belongs to Boavus'
  • 'Boavus brevis belongs to Boavus'
  • 'Boavus occidentalis belongs to Boavus'
  • 'Boidae belongs to Serpentes'
  • 'Bolbodon belongs to Diadectidae'
  • 'Bolodontidae is a subjective synonym of Plagiaulacidae'
  • 'Bolosauridae belongs to Diadectiformes'
  • 'Bolosaurus belongs to Bolosauridae'
  • 'Bolosaurus major belongs to Bolosaurus'
  • 'Bolosaurus rapidens is recombined as Chilonyx rapidens'
  • 'Bolosaurus striatus belongs to Bolosaurus'
  • 'Bonasa belongs to Tetraonidae'
  • 'Boremys belongs to Baenidae'
  • 'Boremys albertensis belongs to Boremys'
  • 'Boreodon belongs to Allotheria'
  • 'Boreodon matutinus belongs to Boreodon'
  • 'Botaurinae belongs to Ardeidae'
  • 'Botauroides belongs to Botaurinae'
  • 'Botauroides parvus belongs to Botauroides'
  • 'Botaurus belongs to Botaurinae'
  • 'Bothremydidae belongs to Chelydoidae'
  • 'Bothremys belongs to Bothremydidae'
  • 'Bothremys cookii belongs to Bothremys'
  • 'Bothrolabis is a subjective synonym of Perchoerus'
  • 'Bottosaurus belongs to Crocodylidae'
  • 'Bottosaurus perrugosus is recombined as Brachychampsa perrugosa'
  • 'Bottosaurus tuberculatus belongs to Bottosaurus'
  • 'Brachaucheniidae belongs to Plesiosauria'
  • 'Brachauchenius belongs to Brachaucheniidae'
  • 'Brachauchenius lucasi belongs to Brachauchenius'
  • 'Brachiosauridae belongs to Sauropoda'
  • 'Brachiosaurus belongs to Brachiosauridae'
  • 'Brachiosaurus altithorax belongs to Brachiosaurus'
  • 'Brachybrachium belongs to Dicynodontidae'
  • 'Brachybrachium brevipes belongs to Brachybrachium'
  • 'Brachyceratops belongs to Ceratopsidae'
  • 'Brachyceratops montanensis belongs to Brachyceratops'
  • 'Brachychampsa belongs to Crocodylidae'
  • 'Brachychampsa montana belongs to Brachychampsa'
  • 'Brachyrophus belongs to Diplodocidae'
  • 'Brachyrophus altarkansanus belongs to Brachyrophus'
  • 'Brachysaurus is a subjective synonym of Ancylocentrum'
  • 'Brachysaurus overtoni is recombined as Ancylocentrum overtoni'
  • 'Branta belongs to Anserinae'
  • 'Branta dickey is corrected as Branta dickeyi and belongs to Branta'
  • 'Branta minuscula belongs to Branta'
  • 'Branta propinqua belongs to Branta'
  • 'Brimosaurus belongs to Brachaucheniidae'
  • 'Brimosaurus grandis belongs to Brimosaurus'
  • 'Brontosaurus belongs to Atlantosauridae'
  • 'Brontosaurus amplus belongs to Brontosaurus'
  • 'Brontosaurus excelsus belongs to Brontosaurus'
  • 'Brontozoum is a subjective synonym of Eubrontes'
  • 'Brontozoum approximatum is recombined as Eubrontes approximatus'
  • 'Brontozoum divaricatum is recombined as Eubrontes divaricatus'
  • 'Brontozoum exsertum is recombined as Anchisauripus exsertus'
  • 'Brontozoum tuberatum is recombined as Anchisauripus tuberatus'
  • 'Brontozoum validum is a subjective synonym of Anchisauripus tuberosus'
  • 'Bubo belongs to Strigidae'
  • 'Bubo leptosteus belongs to Bubo'
  • 'Bubo sinclairi belongs to Bubo'
  • 'Bubonidae is a subjective synonym of Strigidae'
  • 'Buteo belongs to Buteoninae'
  • 'Buteo swainsoni belongs to Buteo'
  • 'Buteo typhoius belongs to Buteo'
  • 'Buteonidae belongs to Falconoidae'
  • 'Buteoninae belongs to Buteonidae'
  • 'Bystra belongs to Testudinidae'
  • 'Bystra nana is corrected as Bystra nanus and belongs to Bystra'
  • 'Caimanoidea belongs to Crocodylidae'
  • 'Caimanoidea visheri belongs to Caimanoidea'
  • 'Calamagras belongs to Boidae'
  • 'Calamagras angulatus belongs to Calamagras'
  • 'Calamagras murivorus belongs to Calamagras'
  • 'Camarasauridae belongs to Sauropoda'
  • 'Camarasaurus belongs to Camarasauridae'
  • 'Camarasaurus leptodirus belongs to Camarasaurus'
  • 'Camarasaurus supremus belongs to Camarasaurus'
  • 'Camptomus belongs to Ptilodontidae'
  • 'Camptomus amplus belongs to Camptomus'
  • 'Camptonotidae is a subjective synonym of Camptosauridae'
  • 'Camptonotus is replaced by Camptosaurus'
  • 'Camptonotus amplus is recombined as Camptosaurus amplus'
  • 'Camptonotus dispar is recombined as Camptosaurus dispar'
  • 'Camptosauridae belongs to Iguanodontoidae'
  • 'Camptosaurus belongs to Camptosauridae'
  • 'Camptosaurus browni belongs to Camptosaurus'
  • 'Camptosaurus depressus belongs to Camptosaurus'
  • 'Camptosaurus medius belongs to Camptosaurus'
  • 'Camptosaurus nanus belongs to Camptosaurus'
  • 'Capella belongs to Scolopacinae'
  • 'Captorhinidae belongs to Captorhiniformes'
  • 'Captorhiniformes belongs to Cotylosauria'
  • 'Captorhinomorpha is replaced by Captorhiniformes'
  • 'Captorhinus belongs to Captorhinidae'
  • 'Captorhinus angusticeps belongs to Captorhinus'
  • 'Captorhinus illinoiensis belongs to Captorhinus'
  • 'Carbo penicillatus is recombined as Phalacrocorax penicillatus'
  • 'Cardiocephalus belongs to Gymnarthridae'
  • 'Cardiocephalus sternbergi belongs to Cardiocephalus'
  • 'Caretta belongs to Cheloniidae'
  • 'Carinatae was reranked as a order and belongs to Eurhipidurae'
  • 'Carnivora belongs to Monodelphia'
  • 'Carolinochelys belongs to Cheloniidae'
  • 'Carolinochelys wilsoni belongs to Carolinochelys'
  • 'Caryoderma snovianum is recombined as Testudo snoviana'
  • 'Casea belongs to Caseidae'
  • 'Casea broilii belongs to Casea'
  • 'Caseasauria is replaced by Caseiformes'
  • 'Caseidae belongs to Caseiformes'
  • 'Caseiformes belongs to Sphenacodontomorphi'
  • 'Catacritosauria belongs to Poeciloglyptica'
  • 'Catapleura belongs to Thalassemydidae'
  • 'Catapleura ponderosa belongs to Catapleura'
  • 'Catarractes affinis is recombined as Uria affinis'
  • 'Catarractes antiquus is recombined as Uria antiqua'
  • 'Catharista is a subjective synonym of Coragyps'
  • 'Catharista occidentalis is recombined as Coragyps occidentalis'
  • 'Catharista shastensis is recombined as Coragyps shastensis'
  • 'Cathartes belongs to Vulturidae'
  • 'Cathartes umbrosus is recombined as Palaeoborus umbrosus'
  • 'Cathartidae is a subjective synonym of Vulturidae'
  • 'Cathartornis belongs to Vulturidae'
  • 'Cathartornis gracilis belongs to Cathartornis'
  • 'Catodon vetus is recombined as Physeter vetus'
  • 'Catopsalis belongs to Polymastodontidae'
  • 'Catopsalis fissidens is recombined as Polymastodon fissidens'
  • 'Catopsalis foliatus belongs to Catopsalis'
  • 'Caulodon belongs to Camarasauridae'
  • 'Caulodon diversidens belongs to Caulodon'
  • 'Caulodon leptoganus belongs to Caulodon'
  • 'Centrocercus belongs to Tetraonidae'
  • 'Centrosaurus belongs to Ceratopsidae'
  • 'Centrosaurus apertus belongs to Centrosaurus'
  • 'Cephalotropis belongs to Cetotheriidae'
  • 'Cephalotropis coronatus belongs to Cephalotropis'
  • 'Ceratops belongs to Ceratopsidae'
  • 'Ceratops horridus is recombined as Triceratops horridus'
  • 'Ceratops montanus belongs to Ceratops'
  • 'Ceratopsia is a subjective synonym of Ceratopsoidae'
  • 'Ceratopsidae belongs to Ceratopsoidae'
  • 'Ceratopsoidea is corrected as Ceratopsoidae and belongs to Orthopoda'
  • 'Ceratosauridae belongs to Megalosauroidae'
  • 'Ceratosaurus belongs to Ceratosauridae'
  • 'Ceratosaurus nasicornis belongs to Ceratosaurus'
  • 'Cerorhinca belongs to Alcinae'
  • 'Cerorhinca dubia belongs to Cerorhinca'
  • 'Cete belongs to Monodelphia'
  • 'Ceterhinops belongs to Eurhinodelphinae'
  • 'Ceterhinops longifrons belongs to Ceterhinops'
  • 'Cetophis belongs to Squalodontidae'
  • 'Cetophis heteroclitus belongs to Cetophis'
  • 'Cetotheriinae was reranked as the family Cetotheriidae and belongs to Mysticete'
  • 'Cetotherium belongs to Cetotheriidae'
  • 'Cetotherium (Plesiocetopsis) was reranked as Plesiocetopsis and belongs to Cetotheriidae'
  • 'Cetotherium crassangulum is a subjective synonym of Cyrtodelphis crassangulum'
  • 'Cetotherium furlongi belongs to Cetotherium'
  • 'Cetotherium megalophysum is recombined as Plesiocetopsis megalophysum'
  • 'Cetotherium parvum belongs to Cetotherium'
  • 'Chamaeleo pristinus is recombined as Tinosaurus pristinus'
  • 'Chamaeleonidae [misspelled as Chamaelonidae] belongs to Chamaeleonoidae'
  • 'Chamaeleonoidae belongs to Iguaniformes'
  • 'Chamasaurus belongs to Cotylosauria'
  • 'Chamasaurus dolichognathus belongs to Chamasaurus'
  • 'Chamops belongs to Iguanidae'
  • 'Chamops denticulatus belongs to Chamops'
  • 'Chamops segnis belongs to Chamops'
  • 'Champsodelphis belongs to Delphininae'
  • 'Champsosauridae belongs to Champsosauriformes'
  • 'Champsosauriformes belongs to Rhynchocephalia'
  • 'Champsosaurus belongs to Champsosauridae'
  • 'Champsosaurus albertensis belongs to Champsosaurus'
  • 'Champsosaurus ambulator belongs to Champsosaurus'
  • 'Champsosaurus annectens belongs to Champsosaurus'
  • 'Champsosaurus australis belongs to Champsosaurus'
  • 'Champsosaurus brevicollis belongs to Champsosaurus'
  • 'Champsosaurus laramiensis belongs to Champsosaurus'
  • 'Champsosaurus profundus belongs to Champsosaurus'
  • 'Champsosaurus puercensis belongs to Champsosaurus'
  • 'Champsosaurus saponensis belongs to Champsosaurus'
  • 'Champsosaurus vaccinsulensis is recombined as Plesiosaurus vaccinsulensis'
  • 'Charadriidae belongs to Charadrioidae'
  • 'Charadriiformes was reranked as a suborder and belongs to Carinatae'
  • 'Charadriinae belongs to Charadriidae'
  • 'Charadrioidea is corrected as Charadrioidae and belongs to Charadriiformes'
  • 'Charadrius belongs to Charadriinae'
  • 'Charadrius sheppardianus belongs to Charadrius'
  • 'Charadrius vociferus is recombined as Oxyechus vociferus'
  • 'Charitemys belongs to Baenidae'
  • 'Charitemys captans belongs to Charitemys'
  • 'Charitonetta belongs to Fuligulinae'
  • 'Chasmosaurus belongs to Ceratopsidae'
  • 'Chaulelasmus belongs to Anatinae'
  • 'Cheirotheroides pilulatus belongs to Cheirotheroides'
  • 'Chelichnus wymanianus belongs to Chelichnus'
  • 'Chelone grandaeva is recombined as Procolpochelys grandaeva'
  • 'Chelone ornata is recombined as Peritresius ornatus'
  • 'Chelone parvitecta is recombined as Chelonia parvitecta'
  • 'Chelone sopita is recombined as Osteopygis sopitus'
  • 'Chelonia belongs to Cheloniidae'
  • 'Chelonia is a subjective synonym of Testudinata'
  • 'Cheloniidae belongs to Chelonioidae'
  • 'Chelonioidae belongs to Thecophora'
  • 'Chelonioidea is replaced by Chelonioidae'
  • 'Chelonoides incedens belongs to Chelonoides'
  • 'Chelydoidae belongs to Thecophora'
  • 'Chelydra belongs to Chelydridae'
  • 'Chelydra crassa is recombined as Hoplochelys crassa'
  • 'Chelydra laticarinata belongs to Chelydra'
  • 'Chelydra sculpta belongs to Chelydra'
  • 'Chelydridae belongs to Emydoidae'
  • 'Chelydrops belongs to Chelydridae'
  • 'Chelydrops stricta belongs to Chelydrops'
  • 'Chen belongs to Anserinae'
  • 'Cheneosaurus belongs to Saurolophinae'
  • 'Cheneosaurus tolmanensis belongs to Cheneosaurus'
  • 'Chilonyx belongs to Diadectidae'
  • 'Chimaerichnus ingens is recombined as Sauropus ingens'
  • 'Chirostenotes belongs to Coeluridae'
  • 'Chirostenotes pergracilis belongs to Chirostenotes'
  • 'Chirotherium barthii belongs to Chirotherium'
  • 'Chirotherium heterodactylus is corrected as Chirotherium heterodactylum and belongs to Chirotherium'
  • 'Chirotherium reiteri belongs to Chirotherium'
  • 'Chirox is a subjective synonym of Ptilodus'
  • 'Chirox plicatus is recombined as Ptilodus plicatus'
  • 'Chisternon belongs to Baenidae'
  • 'Chisternon interpositum belongs to Chisternon'
  • 'Chlidonias belongs to Sterninae'
  • 'Choneziphius belongs to Ziphiinae'
  • 'Choristodera is a subjective synonym of Champsosauriformes'
  • 'Chroicocephalus belongs to Larinae'
  • 'Chrysemys belongs to Emydidae'
  • 'Chrysemys inornata is recombined as Graptemys inornata'
  • 'Chrysemys timida belongs to Chrysemys'
  • 'Ciconia belongs to Ciconiinae'
  • 'Ciconia maltha belongs to Ciconia'
  • 'Ciconia mycteria is recombined as Jabiru mycteria'
  • 'Ciconiidae belongs to Ciconioidae'
  • 'Ciconiiformes was reranked as a suborder and belongs to Carinatae'
  • 'Ciconiinae belongs to Ciconiidae'
  • 'Ciconioidea is corrected as Ciconioidae and belongs to Ciconiiformes'
  • 'Cimoliasaurus belongs to Brachaucheniidae'
  • 'Cimoliosaurus laramiensis belongs to Cimoliosaurus'
  • 'Cimoliosaurus magnus belongs to Cimoliosaurus'
  • 'Cimoliosaurus rex is recombined as Megalneusaurus rex'
  • 'Cimoliosaurus snowii is recombined as Elasmosaurus snowii'
  • 'Cimolodon belongs to Ptilodontidae'
  • 'Cimolodon agilis belongs to Cimolodon'
  • 'Cimolodon nitidus belongs to Cimolodon'
  • 'Cimolodon parvus is recombined as Cimolomys parvus'
  • 'Cimolomys belongs to Ptilodontidae'
  • 'Cimolomys bellus belongs to Cimolomys'
  • 'Cimolomys digona belongs to Cimolomys'
  • 'Cimolomys gracilis belongs to Cimolomys'
  • 'Cimolopteryx belongs to Aves'
  • 'Cimolopteryx rarus belongs to Cimolopteryx'
  • 'Cimolopteryx retustus belongs to Cimolopteryx'
  • 'Cinodon is corrected as Cionodon and belongs to Hadrosaurinae'
  • 'Cinodon arctatus is recombined as Cionodon arctatus'
  • 'Cionodon stenopsis belongs to Cionodon'
  • 'Circinae belongs to Buteonidae'
  • 'Circus belongs to Circinae'
  • 'Cistudo is a subjective synonym of Terrapene'
  • 'Cistudo eurypygia is recombined as Terrapene eurypygia'
  • 'Cistudo marnochii is recombined as Terrapene marnochii'
  • 'Clangula belongs to Fuligulinae'
  • 'Claorhynchus belongs to Hadrosaurinae'
  • 'Claorhynchus trihedrus belongs to Claorhynchus'
  • 'Claosaurus belongs to Hadrosaurinae'
  • 'Claosaurus affinis belongs to Claosaurus'
  • 'Claosaurus annectens is a subjective synonym of Thespesius occidentalis'
  • 'Clemmys belongs to Emydidae'
  • 'Clemmys hesperia belongs to Clemmys'
  • 'Clemmys morrisiae belongs to Clemmys'
  • 'Clemmys percrassus is corrected as Clemmys percrassa and belongs to Clemmys'
  • 'Clemmys saxea belongs to Clemmys'
  • 'Clepsisaurus leai is recombined as Phytosaurus leaii'
  • 'Clepsydropidae is a subjective synonym of Sphenacodontidae'
  • 'Clepsydrops belongs to Sphenacodontidae'
  • 'Clepsydrops collettii belongs to Clepsydrops'
  • 'Clepsydrops gigas is recombined as Dimetrodon gigas'
  • 'Clepsydrops leptocephalus is recombined as Diopeus leptocephalus'
  • 'Clepsydrops limbatus is a subjective synonym of Dimetrodon incisivus'
  • 'Clepsydrops macrospondylus is recombined as Dimetrodon macrospondylus'
  • 'Clepsydrops natalis belongs to Clepsydrops'
  • 'Clepsydrops pedunculatus belongs to Clepsydrops'
  • 'Clepsydrops vinslovii belongs to Clepsydrops'
  • 'Clepsysaurus belongs to Anchisauridae'
  • 'Clepsysaurus pennsylvanicus belongs to Clepsysaurus'
  • 'Clepsysaurus veatleianus belongs to Clepsysaurus'
  • 'Clidastes belongs to Mosasaurinae'
  • 'Clidastes affinis is a subjective synonym of Clidastes velox'
  • 'Clidastes cineriarum [misspelled as Clidastes cinerearum] belongs to Clidastes'
  • 'Clidastes conodon belongs to Clidastes'
  • 'Clidastes iguanavus belongs to Clidastes'
  • 'Clidastes intermedius belongs to Clidastes'
  • 'Clidastes liodontus belongs to Clidastes'
  • 'Clidastes planifrons is recombined as Platecarpus planifrons'
  • 'Clidastes propython belongs to Clidastes'
  • 'Clidastes pumilus is corrected as Clidastes pumilis and belongs to Clidastes'
  • 'Clidastes sternbergi is corrected as Clidastes sternbergii and belongs to Clidastes'
  • 'Clidastes westi is corrected as Clidastes westii and belongs to Clidastes'
  • 'Clidastes wymani belongs to Clidastes'
  • 'Coccyzus geoffroyi is recombined as Neomorphus geoffroyi'
  • 'Coccyzus geoffroyi belongs to Coccyzus' according to Temminck 1820
  • 'Coelophysis belongs to Coeluridae'
  • 'Coelosaurus belongs to Ornithomimidae'
  • 'Coelosaurus antiquus belongs to Coelosaurus'
  • 'Coelosuchus belongs to Goniopholididae'
  • 'Coelosuchus reedii belongs to Coelosuchus'
  • 'Coeluridae belongs to Coeluroidae'
  • 'Coeluroidae belongs to Theropoda'
  • 'Coelurus belongs to Coeluridae'
  • 'Coelurus agilis belongs to Coelurus'
  • 'Coelurus bauri is recombined as Coelophysis bauri'
  • 'Coelurus fragilis belongs to Coelurus'
  • 'Coelurus gracilis is recombined as Dromaeosaurus gracilis'
  • 'Coelurus longicollis is recombined as Coelophysis longicollis'
  • 'Colaptes belongs to Picidae'
  • 'Colinus belongs to Odontophorinae'
  • 'Colinus eatoni belongs to Colinus'
  • 'Collettosaurus indianaensis belongs to Collettosaurus'
  • 'Collettosaurus pentadactylus belongs to Collettosaurus' according to Gilmore 1927
  • 'Collettosaurus pentadactylus belongs to Collettosaurus'
  • 'Colophonodon belongs to Squalodontidae'
  • 'Colophonodon holmesii belongs to Colophonodon'
  • 'Coluber belongs to Colubridae'
  • 'Coluber abacura is recombined as Farancia abacura'
  • 'Coluber constrictor belongs to Coluber'
  • 'Coluber corais is recombined as Drymarchon corais'
  • 'Colubridae belongs to Serpentes'
  • 'Columba belongs to Columbidae'
  • 'Columba fasciata belongs to Columba'
  • 'Columba macroura is recombined as Zenaida macroura'
  • 'Columba micula belongs to Columba'
  • 'Columba palumbus belongs to Columba'
  • 'Columbidae belongs to Columboidae'
  • 'Columbiformes was reranked as a suborder and belongs to Carinatae'
  • 'Columboidae belongs to Columbiformes'
  • 'Colymbidae belongs to Colymbiformes'
  • 'Colymbiformes was reranked as a suborder and belongs to Carinatae'
  • 'Colymbus belongs to Colymbidae'
  • 'Colymbus auritus belongs to Colymbus'
  • 'Colymbus cristatus belongs to Colymbus'
  • 'Colymbus immer is recombined as Gavia immer'
  • 'Colymbus oligocaenus [misspelled as Colymbus oligoceanus] belongs to Colymbus'
  • 'Colymbus parvus belongs to Colymbus'
  • 'Colymbus podiceps is recombined as Podilymbus podiceps'
  • 'Compsemys belongs to Dermatemydidae'
  • 'Compsemys imbricarius is recombined as Basilemys imbricarius'
  • 'Compsemys ogmius is recombined as Basilemys ogmius'
  • 'Compsemys parva is corrected as Compsemys parvus and belongs to Compsemys'
  • 'Compsemys plicatulus is recombined as Glyptops plicatulus'
  • 'Compsemys puercensis belongs to Compsemys'
  • 'Compsemys torrejonensis belongs to Compsemys'
  • 'Compsemys vafer belongs to Compsemys'
  • 'Compsemys variolosus is recombined as Basilemys variolosus'
  • 'Compsemys victus belongs to Compsemys'
  • 'Comptichnus obesus belongs to Comptichnus'
  • 'Conchochelys belongs to Trionychidae'
  • 'Conchochelys admirabilis belongs to Conchochelys'
  • 'Coniophis belongs to Crotalidae'
  • 'Coniophis precedens belongs to Coniophis'
  • 'Coniornis belongs to Hesperornithidae'
  • 'Coniornis altus belongs to Coniornis'
  • 'Conodectes belongs to Conodectidae'
  • 'Conodectes favosus belongs to Conodectes'
  • 'Conodectidae belongs to Conodectiformes'
  • 'Conodectiformes belongs to Cotylosauria'
  • 'Conuropsis belongs to Psittacidae'
  • 'Conuropsis fratercula belongs to Conuropsis'
  • 'Coragyps belongs to Vulturidae'
  • 'Cornwallius belongs to Desmostylidae'
  • 'Corvidae belongs to Fringilloidae'
  • 'Corvinae belongs to Corvidae'
  • 'Corvipes lacertoideus belongs to Corvipes'
  • 'Corvus belongs to Corvinae'
  • 'Corvus brachyrhynchos belongs to Corvus'
  • 'Corvus corax belongs to Corvus'
  • 'Corvus cristatus is recombined as Cyanocitta cristata'
  • 'Corvus shufeldti belongs to Corvus'
  • 'Corvus stelleri is recombined as Cyanocitta stelleri'
  • 'Corythosaurus belongs to Lambeosaurinae'
  • 'Corythosaurus casuarius belongs to Corythosaurus'
  • 'Corythosaurus excavatus belongs to Corythosaurus'
  • 'Cotylosauria was reranked as a order and belongs to Atremata'
  • 'Cracidae belongs to Galloidae'
  • 'Creccoides belongs to Rallinae'
  • 'Creccoides osbornii belongs to Creccoides'
  • 'Cremastosaurus belongs to Sauria'
  • 'Cremastosaurus carinicollis belongs to Cremastosaurus'
  • 'Creosaurus belongs to Megalosauridae'
  • 'Creosaurus atrox belongs to Creosaurus'
  • 'Creosaurus potens is recombined as Dryptosaurus potens'
  • 'Crocodilia is a subjective synonym of Loricata'
  • 'Crocodilomorphi belongs to Loricata'
  • 'Crocodilus (Ichthyosuchus) subulatus is recombined as Crocodylus subulatus'
  • 'Crocodilus antiquus is recombined as Crocodylus antiquus'
  • 'Crocodilus aptus is recombined as Crocodylus aptus'
  • 'Crocodilus basifissus is recombined as Thoracosaurus basifissus'
  • 'Crocodilus basitruncatus is recombined as Thoracosaurus basitruncatus'
  • 'Crocodilus chamensis is recombined as Crocodylus chamensis'
  • 'Crocodilus clavirostris is a subjective synonym of Thoracosaurus neocesariensis'
  • 'Crocodilus clavis is recombined as Crocodylus clavis'
  • 'Crocodilus dekayi is a subjective synonym of Thoracosaurus neocesariensis'
  • 'Crocodilus elliottii is recombined as Crocodylus elliotti'
  • 'Crocodilus fastigiatus is recombined as Crocodylus fastigiatus'
  • 'Crocodilus grinnelli is recombined as Crocodylus grinnelli'
  • 'Crocodilus grypus is recombined as Crocodylus grypus'
  • 'Crocodilus harlani is recombined as Bottosaurus harlani'
  • 'Crocodilus humilis is recombined as Crocodylus humilis'
  • 'Crocodilus liodon is recombined as Crocodylus liodon'
  • 'Crocodilus marylandicus is recombined as Crocodylus marylandicus'
  • 'Crocodilus mississippiensis is recombined as Alligator mississippiensis'
  • 'Crocodilus obscurus is recombined as Thoracosaurus obscurus'
  • 'Crocodilus parvus is recombined as Crocodylus parvus'
  • 'Crocodilus prenasalis is recombined as Caimanoidea prenasalis'
  • 'Crocodilus solaris is recombined as Crocodylus solaris'
  • 'Crocodilus sphenops is recombined as Diplocynodon sphenops'
  • 'Crocodilus stavelianus is recombined as Crocodylus stavelianus'
  • 'Crocodilus sulciferus is recombined as Crocodylus sulciferus'
  • 'Crocodilus tenebrosus is a subjective synonym of Thoracosaurus basitruncatus'
  • 'Crocodilus wheelerii is recombined as Crocodylus wheelerii'
  • 'Crocodilus ziphodon is recombined as Limnosaurus ziphodon'
  • 'Crocodylidae belongs to Crocodyliformes'
  • 'Crocodyliformes belongs to Crocodilomorphi'
  • 'Crocodylus belongs to Crocodylidae'
  • 'Crocodylus acer belongs to Crocodylus'
  • 'Crocodylus affinis belongs to Crocodylus'
  • 'Crocodylus niloticus belongs to Crocodylus'
  • 'Crocodylus vorax belongs to Crocodylus'
  • 'Crotalinae was reranked as the family Crotalidae and belongs to Serpentes'
  • 'Crotalus belongs to Crotalidae'
  • 'Crotalus adamanteus belongs to Crotalus'
  • 'Crotalus atrox belongs to Crotalus' according to Baird and Girard 1853
  • 'Crotalus atrox belongs to Crotalus'
  • 'Crotalus horridus belongs to Crotalus'
  • 'Crotaphytus belongs to Iguanidae'
  • 'Crucipes parvus is corrected as Crucipes parva and belongs to Crucipes'
  • 'Cryptodira is replaced by Emydoidae'
  • 'Ctenacodon belongs to Plagiaulacidae'
  • 'Ctenacodon nanus is a subjective synonym of Ctenacodon serratus'
  • 'Ctenacodon potens is recombined as Psalodon potens'
  • 'Ctenacodon serratus belongs to Ctenacodon'
  • 'Cteniogenys belongs to Sauria'
  • 'Cteniogenys antiquus belongs to Cteniogenys'
  • 'Cuculidae belongs to Cuculoidae'
  • 'Cuculiformes was reranked as a suborder and belongs to Carinatae'
  • 'Cuculoidae belongs to Cuculiformes'
  • 'Cuculus auratus is recombined as Colaptes auratus'
  • 'Cunichnoides marsupialoideus is corrected as Cunichnoides marsupialoides and belongs to Cunichnoides'
  • 'Cupidonia cupido pallidicincta is recombined as Tympanuchus pallidicinctus'
  • 'Cursipes dawsoni belongs to Cursipes'
  • 'Cursipes levis belongs to Cursipes'
  • 'Cursipes levis belongs to Cursipes' according to Matthew 1904
  • 'Cyanocitta belongs to Garrulinae'
  • 'Cygninini was reranked as the subfamily Cygninae and belongs to Anatidae'
  • 'Cygnus belongs to Cygninae'
  • 'Cygnus buccinator belongs to Cygnus'
  • 'Cygnus matthewi belongs to Cygnus'
  • 'Cygnus musicus is a subjective synonym of Cygnus cygnus'
  • 'Cygnus paloregonus belongs to Cygnus'
  • 'Cymbospondylus belongs to Shastasaurinae'
  • 'Cymbospondylus natans belongs to Cymbospondylus'
  • 'Cymbospondylus nevadanus belongs to Cymbospondylus'
  • 'Cymbospondylus petrinus belongs to Cymbospondylus'
  • 'Cymbospondylus piscosus belongs to Cymbospondylus'
  • 'Cynocercus belongs to Toxochelyidae'
  • 'Cynocercus incisus belongs to Cynocercus'
  • 'Cyphornis belongs to Cyphornithidae'
  • 'Cyphornis magnus belongs to Cyphornis'
  • 'Cyphornithidae belongs to Pelecanoidae'
  • 'Cyrtodelphis belongs to Delphininae'
  • 'Cystophora belongs to Cystophorinae'
  • 'Cystophora borealis is a subjective synonym of Cystophora cristata'
  • 'Cystophora borealis belongs to Cystophora' according to Nilsson 1820
  • 'Cystophorina is corrected as Cystophorinae and belongs to Phocidae'
  • 'Dafila belongs to Anatinae'
  • 'Deinodon belongs to Deinodontinae'
  • 'Deinodon horridus belongs to Deinodon'
  • 'Deinodontinae belongs to Deinodontidae'
  • 'Deinosuchus hatcheri is recombined as Phobosuchus hatcheri'
  • 'Deirochelys belongs to Emydidae'
  • 'Deirochelys floridana belongs to Deirochelys'
  • 'Delphinapterinae belongs to Delphinidae'
  • 'Delphinapterus belongs to Delphinapterinae'
  • 'Delphinapterus gabbii is recombined as Tretosphys gabbii'
  • 'Delphinapterus lacertosus is recombined as Priscodelphinus lacertosus'
  • 'Delphinapterus orcinus belongs to Delphinapterus'
  • 'Delphinapterus ruschenbergeri belongs to Delphinapterus'
  • 'Delphinavus belongs to Delphininae'
  • 'Delphinavus newhalli belongs to Delphinavus'
  • 'Delphinidae belongs to Odontocete'
  • 'Delphininae belongs to Delphinidae'
  • 'Delphinodon belongs to Delphininae'
  • 'Delphinodon dividum belongs to Delphinodon'
  • 'Delphinodon leidyi belongs to Delphinodon'
  • 'Delphinosaurus belongs to Shastasaurinae'
  • 'Delphinus belongs to Delphininae'
  • 'Delphinus calvertensis is recombined as Lophocetus calvertensis'
  • 'Delphinus conradi is recombined as Belosphys conradi'
  • 'Delphinus leucas is recombined as Delphinapterus leucas'
  • 'Delphinus occiduus is recombined as Lonchodelphis occiduus'
  • 'Delphinus phocoena is recombined as Phocaena phocaena'
  • 'Delphinus vermontana is recombined as Delphinapterus vermontanus'
  • 'Dendragapus belongs to Tetraonidae'
  • 'Dendrocygna belongs to Dendrocygninae'
  • 'Dendrocygna arcuata belongs to Dendrocygna'
  • 'Dendrocygna eversa belongs to Dendrocygna'
  • 'Dendrocygninae belongs to Anatidae'
  • 'Dermatemydidae belongs to Emydoidae'
  • 'Dermatemys costilata is recombined as Kallistira costilata'
  • 'Dermochelyidae belongs to Athecae'
  • 'Dermochelys belongs to Dermochelyidae'
  • 'Dermodactylus belongs to Ornithocephalinae'
  • 'Desmatochelyidae belongs to Chelonioidae'
  • 'Desmatochelys belongs to Desmatochelyidae'
  • 'Desmatochelys lowii belongs to Desmatochelys'
  • 'Desmatodon belongs to Diadectidae'
  • 'Desmatodon hollandi belongs to Desmatodon'
  • 'Desmatophoca belongs to Desmatophocidae'
  • 'Desmatophoca oregonensis belongs to Desmatophoca'
  • 'Desmatophocidae belongs to Pinnipedia'
  • 'Desmatosuchia is a subjective synonym of Desmatosuchiformes'
  • 'Desmatosuchidae belongs to Desmatosuchiformes'
  • 'Desmatosuchiformes belongs to Phytosauromorphi'
  • 'Desmatosuchus belongs to Desmatosuchidae'
  • 'Desmatosuchus spurensis belongs to Desmatosuchus'
  • 'Desmospondylus is a subjective synonym of Conodectes'
  • 'Desmospondylus anomalus is a subjective synonym of Conodectes favosus'
  • 'Desmostyliformes belongs to Sirenia'
  • 'Desmostylus belongs to Desmostylidae'
  • 'Desmostylus californicus belongs to Desmostylus'
  • 'Desmostylus hesperus belongs to Desmostylus'
  • 'Desmostylus sookensis is recombined as Cornwallius sookensis'
  • 'Diacium belongs to Sauria'
  • 'Diacium quinquepedale belongs to Diacium'
  • 'Diacium unipedalis is recombined as Cremastosaurus unipedalis'
  • 'Diadectes belongs to Diadectidae'
  • 'Diadectes biculminatus belongs to Diadectes'
  • 'Diadectes huenei belongs to Diadectes'
  • 'Diadectes latibuccatus belongs to Diadectes'
  • 'Diadectes maximus belongs to Diadectes'
  • 'Diadectes molaris belongs to Diadectes'
  • 'Diadectes phaseolinus belongs to Diadectes'
  • 'Diadectes sideropelicus belongs to Diadectes'
  • 'Diadectes tenuitectus is recombined as Bolbodon tenuitectus'
  • 'Diadectidae belongs to Diadectiformes'
  • 'Diadectiformes belongs to Cotylosauria'
  • 'Diadectoides belongs to Diadectidae'
  • 'Diadectoides cretin belongs to Diadectoides'
  • 'Diadectomorpha is replaced by Diadectiformes'
  • 'Diasparactus belongs to Diadectidae'
  • 'Diasparactus zenos belongs to Diasparactus'
  • 'Diatryma belongs to Diatrymatidae'
  • 'Diatryma ajax belongs to Diatryma'
  • 'Diatryma filifera [misspelled as Diatryma filiferum] belongs to Diatryma'
  • 'Diatryma gigantea [misspelled as Diatryma giganteum] belongs to Diatryma'
  • 'Diatryma steini belongs to Diatryma'
  • 'Diatrymatiformes belongs to Carinatae'
  • 'Diatrymidae is corrected as Diatrymatidae and belongs to Diatrymatiformes'
  • 'Diceratops belongs to Ceratopsidae'
  • 'Diceratops hatcheri belongs to Diceratops'
  • 'Diclonius calamarius is recombined as Trachodon calamarius'
  • 'Diclonius pentagonus is recombined as Trachodon pentagonus'
  • 'Diclonius perangulatus is recombined as Trachodon perangulatus'
  • 'Dicrocynodon belongs to Dicrocynodontidae'
  • 'Dicrocynodontidae belongs to Pantotheria'
  • 'Dicynodon belongs to Dicynodontidae'
  • 'Dicynodon lacerticeps belongs to Dicynodon'
  • 'Dicynodon rosmarus belongs to Dicynodon'
  • 'Dicynodontia is replaced by Dicynodontiformes'
  • 'Dicynodontidae belongs to Dicynodontiformes'
  • 'Dicynodontiformes belongs to Anomodontia'
  • 'Didelphia was reranked as a subclass and belongs to Mammalia'
  • 'Didelphidae belongs to Didelphoidae'
  • 'Didelphodon belongs to Thlaeodontinae'
  • 'Didelphodon ferox belongs to Didelphodon'
  • 'Didelphodon vorax belongs to Didelphodon'
  • 'Didelphodontinae is replaced by Thlaeodontinae'
  • 'Didelphoidea is corrected as Didelphoidae and belongs to Polyprotodontia'
  • 'Didelphops is a subjective synonym of Didelphodon'
  • 'Dimetrodon belongs to Sphenacodontidae'
  • 'Dimetrodon cruciger is recombined as Edaphosaurus cruciger'
  • 'Dimetrodon gigashomogenes is corrected as Dimetrodon giganhomogenes and belongs to Dimetrodon'
  • 'Dimetrodon incisivus belongs to Dimetrodon'
  • 'Dimetrodon longiramus belongs to Dimetrodon'
  • 'Dimetrodon navajovicus is recombined as Arribasaurus navajovicus'
  • 'Dimetrodon platycentrus belongs to Dimetrodon'
  • 'Dimetrodon rectiformis is a subjective synonym of Dimetrodon incisivus'
  • 'Dimetrodon semiradicatus is a subjective synonym of Dimetrodon incisivus'
  • 'Dinodontidae is corrected as Deinodontidae and belongs to Megalosauroidae'
  • 'Dinophis grandis is recombined as Palaeophis grandis'
  • 'Dinosauria was reranked as a superorder and belongs to Diplotremata'
  • 'Dinoziphius belongs to Physeteridae'
  • 'Dinoziphius carolinensis belongs to Dinoziphius'
  • 'Diomedea belongs to Diomedeidae'
  • 'Diomedea exulans belongs to Diomedea'
  • 'Diomedea nigripes belongs to Diomedea'
  • 'Diomedeidae belongs to Procellarioidae'
  • 'Diopeus belongs to Ophiacodontidae'
  • 'Dioplotherium manigaulti is recombined as Metaxytherium manigaultii'
  • 'Diplocynodon is replaced by Dicrocynodon'
  • 'Diplocynodon belongs to Crocodylidae'
  • 'Diplocynodon ratelii belongs to Diplocynodon'
  • 'Diplocynodon victor is recombined as Dicrocynodon victor'
  • 'Diplocynodontidae is replaced by Dicrocynodontidae'
  • 'Diplocynodus polyodon is recombined as Allognathosuchus polyodon'
  • 'Diplodocidae belongs to Sauropoda'
  • 'Diplodocus belongs to Diplodocidae'
  • 'Diplodocus carnegii belongs to Diplodocus'
  • 'Diplodocus hayi belongs to Diplodocus'
  • 'Diplodocus lacustris belongs to Diplodocus'
  • 'Diplodocus longus belongs to Diplodocus'
  • 'Diplosaurus felix is recombined as Goniopholis felix'
  • 'Diplosaurus nanus is recombined as Goniopholis nanus'
  • 'Diplotomodon belongs to Mosasaurinae'
  • 'Diplotremata belongs to Reptilia'
  • 'Dipriodon belongs to Polymastodontidae'
  • 'Dipriodon lunatus belongs to Dipriodon'
  • 'Dipriodon robustus belongs to Dipriodon'
  • 'Diracodon belongs to Stegosauridae'
  • 'Diracodon laticeps belongs to Diracodon'
  • 'Discosaurus belongs to Brachaucheniidae'
  • 'Discosaurus planior belongs to Discosaurus'
  • 'Discosaurus vetustus belongs to Discosaurus'
  • 'Docodon belongs to Dicrocynodontidae'
  • 'Docodon striatus belongs to Docodon'
  • 'Dolichobrachium belongs to Reptilia'
  • 'Dolichobrachium gracile belongs to Dolichobrachium'
  • 'Dolichopodus tetradactylus belongs to Dolichopodus' according to Gilmore 1926
  • 'Dolichopodus tetradactylus belongs to Dolichopodus'
  • 'Dolichorhynchops is a subjective synonym of Trinacromerum'
  • 'Dolichorhynchops osborni is recombined as Trinacromerum osborni'
  • 'Dorudon belongs to Dorudontidae'
  • 'Dorudon serratus belongs to Dorudon'
  • 'Dorudontidae belongs to Zeuglodontes'
  • 'Dromaeosaurinae belongs to Deinodontidae'
  • 'Dromaeosaurus belongs to Dromaeosaurinae'
  • 'Dromaeosaurus albertensis belongs to Dromaeosaurus'
  • 'Dromatheriidae belongs to Protodonta'
  • 'Dromatherium belongs to Dromatheriidae'
  • 'Dromatherium sylvestre belongs to Dromatherium'
  • 'Dromillopus obtusus belongs to Dromillopus' according to Matthew 1904
  • 'Dromillopus obtusus belongs to Dromillopus'
  • 'Dromillopus parvus belongs to Dromillopus' according to Gilmore 1927
  • 'Dromillopus parvus belongs to Dromillopus'
  • 'Dromillopus quadrifidus belongs to Dromillopus'
  • 'Dromopus aduncus belongs to Dromopus' according to Branson 1910
  • 'Dromopus aduncus belongs to Dromopus'
  • 'Dromopus agilis belongs to Dromopus'
  • 'Dromopus celer belongs to Dromopus' according to Matthew 1903
  • 'Dromopus celer is recombined as Batrachichnus celer'
  • 'Dromopus velox belongs to Dromopus'
  • 'Dromopus woodworthi belongs to Dromopus' according to Lull 1920
  • 'Dromopus woodworthi belongs to Dromopus'
  • 'Drymarchon belongs to Colubridae'
  • 'Dryolestes belongs to Dryolestidae'
  • 'Dryolestes arcuatus is recombined as Herpetairus arcuatus'
  • 'Dryolestes gracilis is replaced by Amblotherium debile'
  • 'Dryolestes obtusus belongs to Dryolestes'
  • 'Dryolestes priscus belongs to Dryolestes'
  • 'Dryolestes tenax belongs to Dryolestes'
  • 'Dryolestes vorax belongs to Dryolestes'
  • 'Dryolestidae belongs to Pantotheria'
  • 'Dryosaurus belongs to Laosauridae'
  • 'Dryptosaurus belongs to Deinodontinae'
  • 'Duovestigia scala belongs to Duovestigia' according to Butts 1891
  • 'Duovestigia scala belongs to Duovestigia'
  • 'Dusignathus belongs to Otariidae'
  • 'Dusignathus santacruzensis belongs to Dusignathus'
  • 'Dynamosaurus is a subjective synonym of Tyrannosaurus'
  • 'Dynamosaurus imperiosus is a subjective synonym of Tyrannosaurus rex'
  • 'Dyoplosaurus [misspelled as Dioplosaurus] belongs to Nodosauridae'
  • 'Dyoplosaurus acutosquameus [misspelled as Dioplosaurus acutosquameus] belongs to Dioplosaurus'
  • 'Dysganus belongs to Hadrosaurinae'
  • 'Dysganus bicarinatus belongs to Dysganus'
  • 'Dysganus encaustus belongs to Dysganus'
  • 'Dysganus haydenianus belongs to Dysganus'
  • 'Dysganus peiganus belongs to Dysganus'
  • 'Dystrophaeus belongs to Sauropoda'
  • 'Dystrophaeus viaemalae belongs to Dystrophaeus'
  • 'Eboroziphius belongs to Ziphiinae'
  • 'Eboroziphius coelops belongs to Eboroziphius'
  • 'Echmatemys belongs to Emydidae'
  • 'Echmatemys aegle belongs to Echmatemys'
  • 'Echmatemys arethusa belongs to Echmatemys'
  • 'Echmatemys callopyge belongs to Echmatemys'
  • 'Echmatemys cyane belongs to Echmatemys'
  • 'Echmatemys depressa belongs to Echmatemys'
  • 'Echmatemys douglassi belongs to Echmatemys'
  • 'Echmatemys hollandi belongs to Echmatemys'
  • 'Echmatemys naomi belongs to Echmatemys'
  • 'Echmatemys obscura belongs to Echmatemys'
  • 'Echmatemys ocyrrhoe belongs to Echmatemys'
  • 'Echmatemys pusilla belongs to Echmatemys'
  • 'Echmatemys rivalis belongs to Echmatemys'
  • 'Echmatemys uintensis belongs to Echmatemys'
  • 'Ectocynodon belongs to Pariotichidae'
  • 'Ectocynodon aguti is recombined as Captorhinus aguti'
  • 'Ectocynodon incisivus is recombined as Labidosaurus incisivus'
  • 'Ectocynodon ordinatus belongs to Ectocynodon'
  • 'Ectypodus belongs to Ptilodontidae'
  • 'Ectypodus musculus belongs to Ectypodus'
  • 'Edaphosauria is replaced by Edaphosauriformes'
  • 'Edaphosauridae belongs to Edaphosauriformes'
  • 'Edaphosauriformes belongs to Sphenacodontomorphi'
  • 'Edaphosaurus belongs to Edaphosauridae'
  • 'Edaphosaurus microdus belongs to Edaphosaurus'
  • 'Edaphosaurus novomexicanus belongs to Edaphosaurus'
  • 'Edaphosaurus pogonias belongs to Edaphosaurus'
  • 'Edestosaurus is a subjective synonym of Clidastes'
  • 'Edestosaurus dispar is recombined as Clidastes dispar'
  • 'Edestosaurus rex is a subjective synonym of Clidastes tortor'
  • 'Edestosaurus stenops is recombined as Clidastes stenops'
  • 'Edestosaurus tortor is recombined as Clidastes tortor'
  • 'Edestosaurus velox is recombined as Clidastes velox'
  • 'Edmontonia belongs to Nodosauridae'
  • 'Edmontonia longiceps belongs to Edmontonia'
  • 'Edmontosaurus belongs to Hadrosaurinae'
  • 'Edmontosaurus regalis belongs to Edmontosaurus'
  • 'Elaninae belongs to Buteonidae'
  • 'Elanus belongs to Elaninae'
  • 'Elasmosauridae belongs to Plesiosauria'
  • 'Elasmosaurus belongs to Elasmosauridae'
  • 'Elasmosaurus intermedius belongs to Elasmosaurus'
  • 'Elasmosaurus marshi belongs to Elasmosaurus'
  • 'Elasmosaurus nobilis belongs to Elasmosaurus'
  • 'Elasmosaurus platyurus belongs to Elasmosaurus'
  • 'Elasmosaurus serpentinus belongs to Elasmosaurus'
  • 'Elasmosaurus sternbergi belongs to Elasmosaurus'
  • 'Elcabrosaurus belongs to Ophiacodontidae'
  • 'Elcabrosaurus baldwini belongs to Elcabrosaurus'
  • 'Elliptonodon belongs to Mosasaurinae'
  • 'Elliptonodon compressus belongs to Elliptonodon'
  • 'Elosaurus belongs to Camarasauridae'
  • 'Elosaurus parvus belongs to Elosaurus'
  • 'Elpidosauria belongs to Poeciloglyptica'
  • 'Embaphias belongs to Plesiosauria'
  • 'Embaphias circulosus belongs to Embaphias'
  • 'Embolophorus belongs to Reptilia'
  • 'Embolophorus dollovianus is recombined as Dimetrodon dollovianus'
  • 'Embolophorus fritillus belongs to Embolophorus'
  • 'Empedias belongs to Diadectidae'
  • 'Empedias fissus is recombined as Diadectes fissus'
  • 'Empedocles is a subjective synonym of Diadectes'
  • 'Empedocles alatus is recombined as Empedias alatus'
  • 'Emydidae belongs to Emydoidae'
  • 'Emydoidae belongs to Thecophora'
  • 'Emys beatus is recombined as Adocus beatus'
  • 'Emys cibollensis is recombined as Echmatemys cibollensis'
  • 'Emys euglypha is recombined as Trachemys euglypha'
  • 'Emys euthnetus is recombined as Echmatemys euthneta'
  • 'Emys firmus is recombined as Agomphus firmus'
  • 'Emys haydeni is recombined as Echmatemys haydeni'
  • 'Emys latilabiatus is recombined as Echmatemys latilabiata'
  • 'Emys lativertebralis is recombined as Echmatemys lativertebralis'
  • 'Emys megaulax is recombined as Echmatemys megaulax'
  • 'Emys obscurus is recombined as Compsemys obscurus'
  • 'Emys petrolei is recombined as Trachemys petrolei'
  • 'Emys pravus is recombined as Adocus pravus'
  • 'Emys septarius is recombined as Echmatemys septaria'
  • 'Emys shaugnessiana is recombined as Echmatemys shaughnessiana'
  • 'Emys stevensonianus is recombined as Echmatemys stevensoniana'
  • 'Emys turgidus is recombined as Agomphus turgidus'
  • 'Ennacodon belongs to Dicrocynodontidae'
  • 'Enneodon is replaced by Ennacodon'
  • 'Enneodon affinis belongs to Enneodon'
  • 'Enneodon crassus is recombined as Ennacodon crassus'
  • 'Eoceornis belongs to Botaurinae'
  • 'Eoceornis ardetta belongs to Eoceornis'
  • 'Eoceratops belongs to Ceratopsidae'
  • 'Eoditremata belongs to Diplotremata'
  • 'Eopteryx belongs to Aves'
  • 'Eopteryx mississippiensis belongs to Eopteryx'
  • 'Eosauravus belongs to Sauravidae'
  • 'Eosauravus copei belongs to Eosauravus'
  • 'Epanterias belongs to Camarasauridae'
  • 'Epanterias amplexus belongs to Epanterias'
  • 'Episcoposaurus belongs to Phytosauridae'
  • 'Episcoposaurus haplocerus belongs to Episcoposaurus'
  • 'Episcoposaurus horridus belongs to Episcoposaurus'
  • 'Erignathus belongs to Phocinae'
  • 'Erismatura belongs to Erismaturinae'
  • 'Erismaturinae belongs to Anatidae'
  • 'Erquelinnesia belongs to Thalassemydidae'
  • 'Erquelinnesia molaria belongs to Erquelinnesia'
  • 'Eschrichtius cephalus is recombined as Cetotherium cephalum'
  • 'Eschrichtius davidsonii is recombined as Cetotherium davidsonii'
  • 'Eschrichtius leptocentrus is recombined as Cetotherium leptocentrum'
  • 'Eschrichtius polyporus is recombined as Balaenoptera polyporum'
  • 'Essonodon belongs to Ptilodontidae'
  • 'Essonodon browni belongs to Essonodon'
  • 'Eubaena belongs to Baenidae'
  • 'Eubaena latifrons belongs to Eubaena'
  • 'Eubrachiosaurus belongs to Dicynodontidae'
  • 'Eubrachiosaurus browni belongs to Eubrachiosaurus'
  • 'Eubrontes dananus is recombined as Anchisauripus dananus'
  • 'Eubrontes titanopelopatidus belongs to Eubrontes'
  • 'Euclastes platyops is recombined as Rhetechelys platyops'
  • 'Eucosmodon belongs to Ptilodontidae'
  • 'Eucosmodon ultimus belongs to Eucosmodon'
  • 'Eumeces belongs to Scincidae'
  • 'Eumetopias belongs to Otariidae'
  • 'Eunotosauria was reranked as a suborder and belongs to Testudinata'
  • 'Euoplocephalus belongs to Ankylosauridae'
  • 'Eupachemys obtusus is recombined as Testudo obtusa'
  • 'Euphagus belongs to Icteridae'
  • 'Eurhinodelphidae was reranked as the subfamily Eurhinodelphinae and belongs to Delphinidae'
  • 'Eurhinodelphis belongs to Eurhinodelphinae'
  • 'Eurhinodelphis bossi belongs to Eurhinodelphis'
  • 'Eurhipidura was reranked as the superorder Eurhipidurae and belongs to Aves'
  • 'Eusuchia is a subjective synonym of Crocodyliformes'
  • 'Euthlastus [misspelled as Euthlastes] belongs to Dryolestidae'
  • 'Euthlastus cordiformis [misspelled as Euthlastes cordiformis] belongs to Euthlastes'
  • 'Exocampe arcta belongs to Exocampe'
  • 'Exocampe minimus is corrected as Exocampe minima and belongs to Exocampe'
  • 'Exocampe ornata belongs to Exocampe'
  • 'Exostinus belongs to Iguanidae'
  • 'Exostinus lancensis belongs to Exostinus'
  • 'Exostinus serratus belongs to Exostinus'
  • 'Falco belongs to Falconinae'
  • 'Falco aeruginosus is recombined as Circus aeruginosus'
  • 'Falco borealis is recombined as Buteo borealis'
  • 'Falco cheriway is recombined as Polyborus cheriway'
  • 'Falco chrysaetos is recombined as Aquila chrysaetos'
  • 'Falco columbarius belongs to Falco'
  • 'Falco cooperi is recombined as Accipiter cooperi'
  • 'Falco falconella is corrected as Falco falconellus and belongs to Falco'
  • 'Falco ferrugineus is recombined as Archibuteo ferrugineus'
  • 'Falco fuscocoerulescens belongs to Falco' according to Vieillot 1817
  • 'Falco fuscocoerulescens is corrected as Falco fuscocaerulescens and belongs to Falco'
  • 'Falco haliaetus is recombined as Pandion haliaetus'
  • 'Falco hudsonius is recombined as Circus hudsonius'
  • 'Falco lagopus is recombined as Archibuteo lagopus'
  • 'Falco leucocephalus is recombined as Haliaeetus leucocephalus'
  • 'Falco mexicanus belongs to Falco'
  • 'Falco peregrinus belongs to Falco'
  • 'Falco sparverius belongs to Falco'
  • 'Falco subbuteo belongs to Falco'
  • 'Falco urubitinga is recombined as Urubitinga urubitinga'
  • 'Falco velox is recombined as Accipiter velox'
  • 'Falconidae belongs to Falconoidae'
  • 'Falconiformes was reranked as a suborder and belongs to Carinatae'
  • 'Falconinae belongs to Falconidae'
  • 'Falconoidae belongs to Falconiformes'
  • 'Farancia belongs to Colubridae'
  • 'Fontinalis belongs to Aves'
  • 'Fontinalis pristina belongs to Fontinalis'
  • 'Formicaroidae belongs to Passeriformes'
  • 'Fringilla erythrophthalma is recombined as Pipilo erythrophthalmus'
  • 'Fringilla hyemalis is recombined as Junco hyemalis'
  • 'Fringillidae belongs to Fringilloidae'
  • 'Fringillinae belongs to Fringillidae'
  • 'Fringilloidae belongs to Passeriformes'
  • 'Fulica belongs to Fulicinae'
  • 'Fulica americana belongs to Fulica'
  • 'Fulica atra belongs to Fulica'
  • 'Fulica minor belongs to Fulica'
  • 'Fulicinae belongs to Rallidae'
  • 'Plesiornis minor is a subjective synonym of Anomoepus intermedius'
  • 'Fuligula affinis is recombined as Marila affinis'
  • 'Fuligula americana is recombined as Marila americana'
  • 'Fuligulinae belongs to Anatidae'
  • 'Fulmarus belongs to Procellariidae'
  • 'Galliformes was reranked as a suborder and belongs to Carinatae'
  • 'Gallinula belongs to Gallinulinae'
  • 'Gallinulinae belongs to Rallidae'
  • 'Gallinuloides belongs to Gallinuloididae'
  • 'Gallinuloides prentici is recombined as Grus prentici'
  • 'Gallinuloides wyomingensis belongs to Gallinuloides'
  • 'Gallinuloididae belongs to Galloidae'
  • 'Galloidae belongs to Galliformes'
  • 'Garrulinae belongs to Corvidae'
  • 'Gavia belongs to Gaviidae'
  • 'Gavia pusilla belongs to Gavia'
  • 'Gavialidae belongs to Gavialiformes'
  • 'Gavialiformes belongs to Crocodilomorphi'
  • 'Gavialis belongs to Gavialidae'
  • 'Gavialis gangeticus belongs to Gavialis'
  • 'Gavialis minor belongs to Gavialis'
  • 'Gavialis neocesariensis is recombined as Thoracosaurus neocesariensis'
  • 'Gavialosuchus belongs to Tomistomidae'
  • 'Gavialosuchus eggenburgensis is corrected as Gavialosuchus eggenburgense and belongs to Gavialosuchus'
  • 'Gaviidae belongs to Gaviiformes'
  • 'Gaviiformes was reranked as a suborder and belongs to Carinatae'
  • 'Geococcyx belongs to Neomorphinae'
  • 'Geosaurus mitchilli is recombined as Macrosaurus mitchillii'
  • 'Geranoaetus belongs to Buteoninae'
  • 'Geranoaetus ales belongs to Geranoaetus'
  • 'Geranoaetus conterminus belongs to Geranoaetus'
  • 'Geranoaetus contortus belongs to Geranoaetus'
  • 'Geranoaetus fragilis belongs to Geranoaetus'
  • 'Geranoaetus grinnelli belongs to Geranoaetus'
  • 'Gigadipus caudatus is recombined as Gigandipus caudatus'
  • 'Gigantitherium is a subjective synonym of Gigandipus'
  • 'Gigantitherium minus is recombined as Apatichnus minor'
  • 'Glaucidium belongs to Strigidae'
  • 'Glaucidium gnoma belongs to Glaucidium'
  • 'Glaucosauridae belongs to Poliosauriformes'
  • 'Glaucosaurus belongs to Glaucosauridae'
  • 'Glaucosaurus megalops belongs to Glaucosaurus'
  • 'Globicephala belongs to Delphininae'
  • 'Globicephalus baereckeii is recombined as Globicephala baereckeii'
  • 'Globidens belongs to Globidentidae'
  • 'Globidens alabamensis belongs to Globidens'
  • 'Globidensidae is corrected as Globidentidae and belongs to Mosasauriformes'
  • 'Glyptops belongs to Pleurosternidae'
  • 'Glyptops caelatus belongs to Glyptops'
  • 'Glyptops depressus belongs to Glyptops'
  • 'Glyptops ornatus is a subjective synonym of Glyptops plicatulus'
  • 'Glyptops pervicax belongs to Glyptops'
  • 'Glyptops utahensis belongs to Glyptops'
  • 'Glyptopsidae is a subjective synonym of Pleurosternidae'
  • 'Glyptosaurus belongs to Anguidae'
  • 'Glyptosaurus anceps is recombined as Ototriton anceps'
  • 'Glyptosaurus giganteus belongs to Glyptosaurus'
  • 'Glyptosaurus hillsi belongs to Glyptosaurus'
  • 'Glyptosaurus montanus belongs to Glyptosaurus'
  • 'Glyptosaurus nodosus belongs to Glyptosaurus'
  • 'Glyptosaurus obtusidens belongs to Glyptosaurus'
  • 'Glyptosaurus princeps belongs to Glyptosaurus'
  • 'Glyptosaurus rugosus belongs to Glyptosaurus'
  • 'Glyptosaurus sphenodon belongs to Glyptosaurus'
  • 'Glyptosaurus sylvestris belongs to Glyptosaurus'
  • 'Gomphotherium emmonsi belongs to Gomphotherium'
  • 'Goniopholididae belongs to Goniopholidiformes'
  • 'Goniopholidiformes belongs to Crocodilomorphi'
  • 'Goniopholis belongs to Goniopholididae'
  • 'Goniopholis affinis belongs to Goniopholis'
  • 'Goniopholis crassidens belongs to Goniopholis'
  • 'Goniopholis gilmorei belongs to Goniopholis'
  • 'Gopherus belongs to Testudinidae'
  • 'Gopherus praecedens belongs to Gopherus'
  • 'Gorgosaurus belongs to Deinodontinae'
  • 'Gorgosaurus libratus belongs to Gorgosaurus'
  • 'Gorgosaurus sternbergi belongs to Gorgosaurus'
  • 'Graculavus belongs to Phalacrocoracidae'
  • 'Graculavus agilis is recombined as Ichthyornis agilis'
  • 'Graculavus anceps is recombined as Ichthyornis anceps'
  • 'Graculavus pumilus is corrected as Graculavus pumilis and belongs to Graculavus'
  • 'Graculavus velox belongs to Graculavus'
  • 'Graculus idahensis is recombined as Phalacrocorax idahensis'
  • 'Graculus macropus is recombined as Phalacrocorax macropus'
  • 'Grallator cuneatus belongs to Grallator'
  • 'Grallator cursorius belongs to Grallator'
  • 'Grallator formosus belongs to Grallator'
  • 'Grallator tenuis belongs to Grallator'
  • 'Graphiodon belongs to Physeteridae'
  • 'Graphiodon vinearis is corrected as Graphiodon vinearius and belongs to Graphiodon'
  • 'Graptemys belongs to Emydidae'
  • 'Gruidae belongs to Gruoidae'
  • 'Gruiformes was reranked as a suborder and belongs to Carinatae'
  • 'Gruinae belongs to Gruidae'
  • 'Gruioidea is corrected as Gruoidae and belongs to Gruiformes'
  • 'Grus belongs to Gruinae'
  • 'Grus haydeni is a subjective synonym of Grus mexicanus'
  • 'Grus proavus belongs to Grus'
  • 'Gryposaurus is a subjective synonym of Kritosaurus'
  • 'Gryposaurus notabilis is recombined as Kritosaurus notabilis'
  • 'Gymnarthria is replaced by Gymnarthriformes'
  • 'Gymnarthridae belongs to Gymnarthriformes'
  • 'Gymnarthriformes belongs to Cotylosauria'
  • 'Gymnarthrus belongs to Gymnarthridae'
  • 'Gymnarthrus willoughbyi belongs to Gymnarthrus'
  • 'Gymnogyps belongs to Vulturidae'
  • 'Gymnogyps amplus belongs to Gymnogyps'
  • 'Gyremys belongs to Emydidae'
  • 'Gyremys spectabilis belongs to Gyremys' according to Hay 1908
  • 'Gyremys spectabilis belongs to Gyremys'
  • 'Habrosaurus belongs to Sauria'
  • 'Habrosaurus dilatus belongs to Habrosaurus'
  • 'Hadrianus belongs to Testudinidae'
  • 'Hadrianus allabiatus is recombined as Achilemys allabiata'
  • 'Hadrianus majusculus belongs to Hadrianus'
  • 'Hadrianus octonarius is a subjective synonym of Hadrianus corsoni'
  • 'Hadrianus quadratus is a subjective synonym of Hadrianus corsoni'
  • 'Hadrianus robustus belongs to Hadrianus'
  • 'Hadrianus schucherti belongs to Hadrianus'
  • 'Hadrianus tumidus belongs to Hadrianus'
  • 'Hadrianus utahensis belongs to Hadrianus'
  • 'Hadrosauridae belongs to Iguanodontoidae'
  • 'Hadrosaurinae belongs to Hadrosauridae'
  • 'Hadrosaurus belongs to Hadrosaurinae'
  • 'Hadrosaurus agilis is recombined as Claosaurus agilis'
  • 'Hadrosaurus breviceps is recombined as Trachodon breviceps'
  • 'Hadrosaurus cavatus belongs to Hadrosaurus'
  • 'Hadrosaurus foulkii belongs to Hadrosaurus'
  • 'Hadrosaurus minor belongs to Hadrosaurus'
  • 'Hadrosaurus paucidens is recombined as Ceratops paucidens'
  • 'Hadrosaurus tripos belongs to Hadrosaurus'
  • 'Haliaeetus belongs to Buteoninae'
  • 'Halisaurus fraternus is recombined as Baptosaurus fraternus'
  • 'Halitheriidae belongs to Trichechiformes'
  • 'Halitherium belongs to Halitheriidae'
  • 'Hallopidae belongs to Coeluroidae'
  • 'Hallopus belongs to Hallopidae'
  • 'Halodon is a subjective synonym of Meniscoessus'
  • 'Halodon formosus is recombined as Ptilodus formosus'
  • 'Halodon sculptus is recombined as Meniscoessus sculptus'
  • 'Halodon serratus is recombined as Ptilodus serratus'
  • 'Haplocanthosaurus belongs to Camarasauridae'
  • 'Haplocanthosaurus utterbacki belongs to Haplocanthosaurus'
  • 'Haplocanthus priscus is recombined as Haplocanthosaurus priscus'
  • 'Hargeria belongs to Hesperornithidae'
  • 'Harpagosaurus belongs to Sauria'
  • 'Harpagosaurus excedens belongs to Harpagosaurus'
  • 'Harpagosaurus parvus belongs to Harpagosaurus'
  • 'Harpedactylus concameratus is recombined as Platypterna concamerata'
  • 'Harpedactylus crassus belongs to Harpedactylus'
  • 'Harpedactylus gracilior belongs to Harpedactylus'
  • 'Harpedactylus rectus is recombined as Platypterna recta'
  • 'Hatteriidae is a subjective synonym of Sphenodontidae'
  • 'Hebe belongs to Pteroptochidae'
  • 'Hebe schucherti belongs to Hebe'
  • 'Helagras belongs to Crotalidae'
  • 'Helagras prisciformis belongs to Helagras'
  • 'Helcura anguinea belongs to Helcura'
  • 'Helcura littoralis belongs to Helcura'
  • 'Helcura surgens belongs to Helcura'
  • 'Helodectes belongs to Captorhinidae'
  • 'Helodectes isaaci belongs to Helodectes'
  • 'Helodectes paridens belongs to Helodectes'
  • 'Heloderma belongs to Helodermidae'
  • 'Heloderma matthewi belongs to Heloderma'
  • 'Helodermatidae is corrected as Helodermidae and belongs to Anguioidae'
  • 'Helodermoides is a subjective synonym of Glyptosaurus'
  • 'Helodermoides tuberculatus is recombined as Glyptosaurus tuberculatus'
  • 'Helopanoplia belongs to Trionychidae'
  • 'Helopanoplia distincta belongs to Helopanoplia'
  • 'Hemicaulodon belongs to Halitheriidae'
  • 'Hemicaulodon effodiens belongs to Hemicaulodon'
  • 'Herodias belongs to Ardeinae'
  • 'Herpetairus belongs to Dryolestidae'
  • 'Hesperocetus belongs to Iniinae'
  • 'Hesperocetus californicus belongs to Hesperocetus'
  • 'Hesperornidae is corrected as Hesperornithidae and belongs to Hesperornithomorphi'
  • 'Hesperornis belongs to Hesperornithidae'
  • 'Hesperornis gracilis is recombined as Hargeria gracilis'
  • 'Hesperornis montana is corrected as Hesperornis montanus and belongs to Hesperornis'
  • 'Hesperornis regalis belongs to Hesperornis'
  • 'Hesperornithomorphi belongs to Eurhipidurae'
  • 'Heterodontosuchus belongs to Phytosauridae'
  • 'Heterodontosuchus ganei belongs to Heterodontosuchus'
  • 'Hierosaurus belongs to Ankylosauridae'
  • 'Hierosaurus sternbergii belongs to Hierosaurus'
  • 'Hirundinidae belongs to Fringilloidae'
  • 'Hirundo lunifrons belongs to Hirundo' according to Say 1823
  • 'Hirundo lunifrons is recombined as Petrochelidon lunifrons'
  • 'Hirundo melanogaster belongs to Hirundo' according to Swainson 1827
  • 'Hirundo melanogaster is recombined as Petrochelidon melanogaster'
  • 'Histrionicus belongs to Fuligulinae'
  • 'Holcodus belongs to Platecarpinae'
  • 'Holcodus acutidens belongs to Holcodus'
  • 'Holcodus coryphaeus is recombined as Platecarpus coryphaeus'
  • 'Holcodus tectulus is recombined as Platecarpus tectulus'
  • 'Holops cordatus is recombined as Thoracosaurus cordatus'
  • 'Holopsisuchus pneumaticus is recombined as Thoracosaurus pneumaticus'
  • 'Holosaurus belongs to Platecarpinae'
  • 'Holosaurus abruptus belongs to Holosaurus'
  • 'Homorophus belongs to Dermatemydidae'
  • 'Homorophus insuetus belongs to Homorophus'
  • 'Hoplichnus equus belongs to Hoplichnus'
  • 'Hoplichnus quadrupedans belongs to Hoplichnus'
  • 'Hoplitosaurus belongs to Scelidosauridae'
  • 'Hoplocetus belongs to Physeteridae'
  • 'Hoplocetus obesus belongs to Hoplocetus'
  • 'Hoplochelys belongs to Dermatemydidae'
  • 'Hoplochelys bicarinata belongs to Hoplochelys'
  • 'Hoplochelys caelata belongs to Hoplochelys'
  • 'Hoplochelys elongata belongs to Hoplochelys'
  • 'Hoplochelys laqueata belongs to Hoplochelys'
  • 'Hoplochelys paludosa belongs to Hoplochelys'
  • 'Hoplochelys saliens belongs to Hoplochelys'
  • 'Hoplosuchus belongs to Stegomosuchidae'
  • 'Hoplosuchus kayi belongs to Hoplosuchus'
  • 'Hybemys belongs to Emydidae'
  • 'Hybemys arenarius belongs to Hybemys'
  • 'Hydrodamalidae belongs to Trichechiformes'
  • 'Hyloidichnus bifurcatus belongs to Hyloidichnus'
  • 'Hyloidichnus whitei belongs to Hyloidichnus'
  • 'Hylopus caudifer is recombined as Asperipes caudifer'
  • 'Hylopus hardingi belongs to Hylopus'
  • 'Hylopus hermitanus belongs to Hylopus'
  • 'Hylopus hermitanus belongs to Hylopus' according to Gilmore 1927
  • 'Hylopus logani belongs to Hylopus'
  • 'Hylopus minor belongs to Hylopus'
  • 'Hylopus trifidus is recombined as Ornithoides trifidus'
  • 'Hylopus variabilis belongs to Hylopus' according to Matthew 1910
  • 'Hylopus variabilis belongs to Hylopus'
  • 'Hypacrosaurus belongs to Lambeosaurinae'
  • 'Hypacrosaurus altispinus belongs to Hypacrosaurus'
  • 'Hyperoodon belongs to Ziphiinae'
  • 'Hyphepus fieldi belongs to Hyphepus'
  • 'Hypopnous belongs to Captorhinidae'
  • 'Hypopnous squaliceps belongs to Hypopnous'
  • 'Hyporhina belongs to Leposternidae'
  • 'Hyporhina antiqua belongs to Hyporhina'
  • 'Hyposaurus belongs to Pholidosauridae'
  • 'Hyposaurus ferox belongs to Hyposaurus'
  • 'Hyposaurus fraterculus is recombined as Gavialis fraterculus'
  • 'Hyposaurus natator belongs to Hyposaurus'
  • 'Hyposaurus rogersii belongs to Hyposaurus'
  • 'Hyposaurus vebbii is recombined as Goniopholis vebbianus'
  • 'Hypsibema belongs to Hadrosaurinae'
  • 'Hypsibema crassicauda belongs to Hypsibema'
  • 'Hypsilophodontidae belongs to Iguanodontoidae'
  • 'Hypsirhophus seeleyanus is recombined as Stegosaurus seeleyanus'
  • 'Hypsirophus discurus is recombined as Stegosaurus discurus'
  • 'Hypsognathus belongs to Cotylosauria'
  • 'Hypsognathus fenneri belongs to Hypsognathus'
  • 'Ibididae belongs to Ibididoidae'
  • 'Ibididoidae belongs to Ciconiiformes'
  • 'Ichthyoidichnites acadiensis belongs to Ichthyoidichnites' according to Ami 1902
  • 'Ichthyoidichnites acadiensis belongs to Ichthyoidichnites'
  • 'Ichthyopterygia is a subjective synonym of Ichthyosauria'
  • 'Ichthyornidae is corrected as Ichthyornithidae and belongs to Ichthyornithiformes'
  • 'Ichthyornis belongs to Ichthyornithidae'
  • 'Ichthyornis celer is recombined as Apatornis celer'
  • 'Ichthyornis dispar belongs to Ichthyornis'
  • 'Ichthyornis tener belongs to Ichthyornis'
  • 'Ichthyornis validus belongs to Ichthyornis'
  • 'Ichthyornis victor belongs to Ichthyornis'
  • 'Ichthyornithes was reranked as the suborder Ichthyornithiformes and belongs to Carinatae'
  • 'Ichthyosauria belongs to Catacritosauria'
  • 'Ichthyosaurus is a subjective synonym of Proteosaurus'
  • 'Ichthyosaurus cornalianus is recombined as Mixosaurus cornalianus'
  • 'Ichthyosaurus missouriensis is recombined as Mosasaurus missouriensis'
  • 'Ichthyosaurus platyodon is recombined as Proteosaurus platyodon'
  • 'Icteridae belongs to Fringilloidae'
  • 'Icterus xanthocephalus is recombined as Xanthocephalus xanthocephalus'
  • 'Idiophyseter belongs to Physeteridae'
  • 'Idiophyseter merriami belongs to Idiophyseter'
  • 'Iguanavus belongs to Iguanidae'
  • 'Iguanavus exilis belongs to Iguanavus'
  • 'Iguanavus teres belongs to Iguanavus'
  • 'Iguanidae belongs to Iguanoidae'
  • 'Iguaniformes belongs to Sauria'
  • 'Iguanodontidae belongs to Iguanodontoidae'
  • 'Iguanodontoidea is corrected as Iguanodontoidae and belongs to Orthopoda'
  • 'Iguanoidae belongs to Iguaniformes'
  • 'Iniana was reranked as the family Iniidae and belongs to Odontocete'
  • 'Iniinae belongs to Iniidae'
  • 'Isocampe strata belongs to Isocampe'
  • 'Isodectes belongs to Pariotichidae'
  • 'Ixacanthus belongs to Eurhinodelphinae'
  • 'Ixacanthus coelospondylus belongs to Ixacanthus'
  • 'Jabiru belongs to Ciconiinae'
  • 'Jabiru weillsi belongs to Jabiru'
  • 'Junco belongs to Fringillinae'
  • 'Junco phaeonotus belongs to Junco' according to Wagler 1831
  • 'Junco phaeonotus belongs to Junco'
  • 'Kallistira belongs to Dermatemydidae'
  • 'Kentriodon belongs to Delphininae'
  • 'Kentriodon pernix belongs to Kentriodon'
  • 'Kepolestes belongs to Dryolestidae'
  • 'Kepolestes coloradensis belongs to Kepolestes'
  • 'Kinosternidae belongs to Emydoidae'
  • 'Kinosternon belongs to Kinosternidae'
  • 'Kinosternon arizonense belongs to Kinosternon'
  • 'Kritosaurus belongs to Hadrosaurinae'
  • 'Kritosaurus incurvimanus belongs to Kritosaurus'
  • 'Kritosaurus navajovius belongs to Kritosaurus'
  • 'Kritosaurus navajovius belongs to Kritosaurus'
  • 'Labidosaurus belongs to Captorhinidae'
  • 'Labidosaurus broilii belongs to Labidosaurus'
  • 'Labrosauridae belongs to Megalosauroidae'
  • 'Labrosaurus belongs to Labrosauridae'
  • 'Labrosaurus ferox belongs to Labrosaurus'
  • 'Labrosaurus sulcatus is recombined as Antrodemus sulcatus'
  • 'Lacerta belongs to Lacertidae'
  • 'Lacerta agilis belongs to Lacerta'
  • 'Lacertidae belongs to Scincoidae'
  • 'Laelaps is replaced by Dryptosaurus'
  • 'Laelaps aquilunguis is recombined as Dryptosaurus aquilunguis'
  • 'Laelaps cristatus is recombined as Dromaeosaurus cristatus'
  • 'Laelaps explanatus is recombined as Dromaeosaurus explanatus'
  • 'Laelaps falculus is recombined as Deinodon falculus'
  • 'Laelaps hazenianus is recombined as Deinodon hazenianus'
  • 'Laelaps incrassatus is recombined as Deinodon incrassatus'
  • 'Laelaps laevifrons is recombined as Dromaeosaurus laevifrons'
  • 'Dryptosaurus macropus is a subjective synonym of Coelosaurus antiquus'
  • 'Laelaps trihedrodon is recombined as Antrodemus trihedrodon'
  • 'Lagunculapes latus belongs to Lagunculapes'
  • 'Lambeosaurinae belongs to Hadrosauridae'
  • 'Lambeosaurus belongs to Lambeosaurinae'
  • 'Lambeosaurus lambei belongs to Lambeosaurus'
  • 'Lanceosaurus belongs to Sauria'
  • 'Lanceosaurus compressus belongs to Lanceosaurus'
  • 'Lanceosaurus hatcheri belongs to Lanceosaurus'
  • 'Laniidae belongs to Fringilloidae'
  • 'Laniinae belongs to Laniidae'
  • 'Lanius belongs to Laniinae'
  • 'Lanius ludovicianus belongs to Lanius'
  • 'Laodon is a subjective synonym of Amblotherium'
  • 'Laodon venustus is a subjective synonym of Amblotherium gracilis'
  • 'Laolestes belongs to Dryolestidae'
  • 'Laolestes eminens belongs to Laolestes'
  • 'Laoporus noblei belongs to Laoporus' according to Lull 1918
  • 'Laoporus noblei belongs to Laoporus'
  • 'Laoporus schucherti belongs to Laoporus' according to Lull 1918
  • 'Laoporus schucherti belongs to Laoporus'
  • 'Laopteryx belongs to Archaeopterygidae'
  • 'Laopteryx priscus belongs to Laopteryx'
  • 'Laornis belongs to Anserinae'
  • 'Laornis edvardsianus belongs to Laornis'
  • 'Laosauridae belongs to Iguanodontoidae'
  • 'Laosaurus belongs to Laosauridae'
  • 'Laosaurus altus is recombined as Dryosaurus altus'
  • 'Laosaurus celer belongs to Laosaurus'
  • 'Laosaurus consors belongs to Laosaurus'
  • 'Laosaurus gracilis belongs to Laosaurus'
  • 'Laosaurus minimus belongs to Laosaurus'
  • 'Laridae belongs to Laroidae'
  • 'Larinae belongs to Laridae'
  • 'Laroidea is corrected as Laroidae and belongs to Charadriiformes'
  • 'Larus belongs to Larinae'
  • 'Larus argentatus belongs to Larus'
  • 'Larus californicus belongs to Larus'
  • 'Larus canus belongs to Larus'
  • 'Larus oregonus belongs to Larus'
  • 'Larus pristinus belongs to Larus'
  • 'Larus robustus belongs to Larus'
  • 'Larus sabini is recombined as Xema sabini'
  • 'Larus vero belongs to Larus'
  • 'Leidyosuchus belongs to Crocodylidae'
  • 'Leidyosuchus canadensis belongs to Leidyosuchus'
  • 'Leidyosuchus sternbergii belongs to Leidyosuchus'
  • 'Leiodon laticaudus is recombined as Tylosaurus laticaudus'
  • 'Lembonax belongs to Cheloniidae'
  • 'Lembonax insularis belongs to Lembonax'
  • 'Lembonax polemicus belongs to Lembonax'
  • 'Lembonax propylaeus belongs to Lembonax'
  • 'Lepidosauria is a subjective synonym of Squamata'
  • 'Lepidosternidae is corrected as Leposternidae and belongs to Scincoidae'
  • 'Lepidosternum floridana is recombined as Rhineura floridana'
  • 'Leptoceratops belongs to Ceratopsidae'
  • 'Leptoceratops gracilis belongs to Leptoceratops'
  • 'Leptocheirus zitteli is recombined as Merriamia zitteli'
  • 'Leptonyx is replaced by Stenonyx'
  • 'Leptonyx lateralis is recombined as Stenonyx lateralis'
  • 'Leptophoca belongs to Phocinae'
  • 'Leptophoca lenis belongs to Leptophoca'
  • 'Leptosuchus belongs to Phytosauridae'
  • 'Leptosuchus crosbiensis belongs to Leptosuchus'
  • 'Leptosuchus imperfecta is corrected as Leptosuchus imperfectus and belongs to Leptosuchus'
  • 'Lestophis belongs to Boidae'
  • 'Lestornis crassipes is recombined as Hesperornis crassipes'
  • 'Lestosaurus is a subjective synonym of Platecarpus'
  • 'Lestosaurus felix is recombined as Platecarpus felix'
  • 'Lestosaurus gracilis is recombined as Platecarpus gracilis'
  • 'Lestosaurus latifrons is recombined as Platecarpus latifrons'
  • 'Lestosaurus simus is recombined as Platecarpus simus'
  • 'Leurospondylus belongs to Elasmosauridae'
  • 'Leurospondylus ultimus belongs to Leurospondylus'
  • 'Limicolavis belongs to Tringinae'
  • 'Limicolavis pluvianella belongs to Limicolavis'
  • 'Limnophis crassus is recombined as Lestophis crassus'
  • 'Limnopus coloradensis belongs to Limnopus' according to Henderson 1924
  • 'Limnopus coloradensis is recombined as Laoporus coloradensis'
  • 'Limnopus vagus belongs to Limnopus'
  • 'Limnosaurus belongs to Crocodylidae'
  • 'Limnoscelidae belongs to Captorhiniformes'
  • 'Limnoscelis belongs to Limnoscelidae'
  • 'Limnoscelis paludis belongs to Limnoscelis'
  • 'Limosa belongs to Tringinae'
  • 'Limosa vanrossemi belongs to Limosa'
  • 'Liodon congrops is recombined as Tylosaurus congrops'
  • 'Liodon crassartus is recombined as Platecarpus crassartus'
  • 'Liodon curtirostris is recombined as Platecarpus curtirostris'
  • 'Liodon dyspelor is recombined as Tylosaurus dyspelor'
  • 'Liodon glandiferus is recombined as Platecarpus glandiferus'
  • 'Liodon ictericus is recombined as Platecarpus ictericus'
  • 'Liodon mudgei is recombined as Platecarpus mudgei'
  • 'Liodon nepaeolicus is recombined as Tylosaurus nepaeolicus'
  • 'Liodon perlatus is recombined as Tylosaurus perlatus'
  • 'Liodon sectorius is recombined as Tylosaurus sectorius'
  • 'Lithophis belongs to Boidae'
  • 'Lithophis sargenti belongs to Lithophis'
  • 'Lobipes belongs to Phalaropodidae'
  • 'Lobodon belongs to Lobodontinae'
  • 'Lobodontini was reranked as the subfamily Lobodontinae and belongs to Phocidae'
  • 'Lonchodelphis belongs to Stenodelphininae'
  • 'Lophocetus belongs to Delphininae'
  • 'Lophodytes belongs to Merginae'
  • 'Lophortyx belongs to Odontophorinae'
  • 'Loricata was reranked as a superorder and belongs to Diplotremata'
  • 'Lytoloma belongs to Thalassemydidae'
  • 'Lytoloma angusta belongs to Lytoloma'
  • 'Lytoloma jeanesii belongs to Lytoloma'
  • 'Lytoloma wielandi belongs to Lytoloma'
  • 'Macelognathidae belongs to Coeluroidae'
  • 'Macelognathus belongs to Macelognathidae'
  • 'Macelognathus vagans belongs to Macelognathus'
  • 'Machaeroprosopus belongs to Phytosauridae'
  • 'Machaeroprosopus andersoni belongs to Machaeroprosopus'
  • 'Machaeroprosopus validus belongs to Machaeroprosopus'
  • 'Machaerosaurus belongs to Sauria'
  • 'Machaerosaurus torrejonensis belongs to Machaerosaurus'
  • 'Macrochelys belongs to Chelydridae'
  • 'Macrochelys floridana belongs to Macrochelys'
  • 'Macroclemys temminckii is recombined as Macrochelys temminckii'
  • 'Macrophoca atlantica is recombined as Squalodon atlanticus'
  • 'Macropterna is a subjective synonym of Palamopus'
  • 'Macropterna divaricans is recombined as Palamopus divaricans'
  • 'Macropterna gracilipes is recombined as Palamopus gracilipes'
  • 'Macrorhamphus belongs to Scolopacinae'
  • 'Macrosaurus belongs to Tylosaurinae'
  • 'Macrosaurus laevis belongs to Macrosaurus'
  • 'Macrosaurus platyspondylus is recombined as Baptosaurus platyspondylus'
  • 'Macrosaurus proriger is recombined as Tylosaurus proriger'
  • 'Malthacolestes belongs to Dryolestidae'
  • 'Malthacolestes osborni belongs to Malthacolestes'
  • 'Mammalia belongs to Vertebrata'
  • 'Manati gigas is recombined as Hydrodamalis gigas'
  • 'Manatus antiquus is recombined as Halitherium antiquum'
  • 'Manatus giganteus is recombined as Trichechus giganteus'
  • 'Manatus inornatus is recombined as Halitherium inornatum'
  • 'Manatus latirostris is recombined as Trichechus latirostris'
  • 'Mancalla belongs to Alcinae'
  • 'Mancalla californiensis belongs to Mancalla'
  • 'Manospondylus belongs to Ornithomimidae'
  • 'Manospondylus gigas belongs to Manospondylus'
  • 'Mareca belongs to Anatinae'
  • 'Marila belongs to Fuligulinae'
  • 'Marsupialia was reranked as a order and belongs to Didelphia'
  • 'Megadactylus is replaced by Anchisaurus'
  • 'Megadactylus polyzelus is recombined as Anchisaurus polyzelus'
  • 'Megalneusaurus belongs to Plesiosauria'
  • 'Megalosauri is corrected as Megalosauridae and belongs to Megalosauroidae'
  • 'Megalosauroidea was reranked as the superfamily Megalosauroidae and belongs to Theropoda'
  • 'Megapezia coloradensis belongs to Megapezia' according to Lull 1918
  • 'Megapezia coloradensis is recombined as Parabaropus coloradensis'
  • 'Megapezia pineoi belongs to Megapezia'
  • 'Megaptera belongs to Balaenopterinae'
  • 'Megaptera brachychira belongs to Megaptera'
  • 'Megaptera expansa is recombined as Siphonocetus expansus'
  • 'Megaptera miocaena belongs to Megaptera'
  • 'Megasaurus belongs to Sauria'
  • 'Megasaurus robustus belongs to Megasaurus'
  • 'Melanodon belongs to Dryolestidae'
  • 'Melanodon oweni belongs to Melanodon'
  • 'Melanosaurus belongs to Anguidae'
  • 'Melanosaurus maximus belongs to Melanosaurus'
  • 'Meleagridae belongs to Galloidae'
  • 'Meleagris belongs to Meleagridae'
  • 'Meleagris celer belongs to Meleagris'
  • 'Meleagris gallopavo belongs to Meleagris'
  • 'Meleagris ocellata belongs to Meleagris' according to Cuvier 1820
  • 'Meleagris ocellata is recombined as Agriocharis ocellata'
  • 'Meleagris richmondi belongs to Meleagris'
  • 'Meleagris superbus is corrected as Meleagris superba and belongs to Meleagris'
  • 'Menacodon is a subjective synonym of Tinodon'
  • 'Menacodon rarus is a subjective synonym of Tinodon lepidus'
  • 'Meniscoessus belongs to Ptilodontidae'
  • 'Meniscoessus borealis belongs to Meniscoessus'
  • 'Meniscoessus conquistus belongs to Meniscoessus'
  • 'Mergini was reranked as the subfamily Merginae and belongs to Anatidae'
  • 'Mergus belongs to Merginae'
  • 'Mergus cucullatus is recombined as Lophodytes cucullatus'
  • 'Mergus merganser belongs to Mergus'
  • 'Mergus serrator belongs to Mergus'
  • 'Merriamia belongs to Shastasaurinae'
  • 'Merycochoerus (Brachycrus) is an invalid subgroup of Merycochoerus'
  • 'Mesocetus belongs to Cetotheriidae'
  • 'Mesocetus siphunculus belongs to Mesocetus'
  • 'Mesoplodon belongs to Ziphiinae'
  • 'Mesoteras belongs to Cetotheriidae'
  • 'Mesoteras kerrianus belongs to Mesoteras'
  • 'Metamosaurus belongs to Reptilia'
  • 'Metamosaurus fossatus belongs to Metamosaurus'
  • 'Metatheria is replaced by Didelphia'
  • 'Metaxytherium belongs to Halitheriidae'
  • 'Metaxytherium floridanum belongs to Metaxytherium'
  • 'Metaxytherium jordani belongs to Metaxytherium'
  • 'Metopocetus belongs to Cetotheriidae'
  • 'Metopocetus durinasus belongs to Metopocetus'
  • 'Miccylotyrans belongs to Dryolestidae'
  • 'Miccylotyrans minimus belongs to Miccylotyrans'
  • 'Micrichnus scotti belongs to Micrichnus'
  • 'Microconodon belongs to Dromatheriidae'
  • 'Microconodon tenuirostris belongs to Microconodon'
  • 'Microdontosaurus is a subjective synonym of Ophthalmosaurus'
  • 'Microdontosaurus petersonii is a subjective synonym of Ophthalmosaurus discus'
  • 'Micropalama belongs to Tringinae'
  • 'Micropalama hesternus is corrected as Micropalama hesterna and belongs to Micropalama'
  • 'Micropallas belongs to Strigidae'
  • 'Milvinae belongs to Buteonidae'
  • 'Milvus leucurus is recombined as Elanus leucurus'
  • 'Minerva belongs to Strigidae'
  • 'Minerva saurodosis belongs to Minerva'
  • 'Miosula belongs to Sulidae'
  • 'Miosula media belongs to Miosula'
  • 'Mixosauridae belongs to Ichthyosauria'
  • 'Mixosaurinae belongs to Mixosauridae'
  • 'Mixosaurus belongs to Mixosaurinae'
  • 'Monoclonius belongs to Ceratopsidae'
  • 'Monoclonius belli is recombined as Chasmosaurus belli'
  • 'Monoclonius canadensis is recombined as Eoceratops canadensis'
  • 'Monoclonius crassus belongs to Monoclonius'
  • 'Monoclonius cutleri belongs to Monoclonius'
  • 'Monoclonius dawsoni belongs to Monoclonius'
  • 'Monoclonius fissus belongs to Monoclonius'
  • 'Monoclonius flexus belongs to Monoclonius'
  • 'Monoclonius nasicornus belongs to Monoclonius'
  • 'Monoclonius recurvicornis belongs to Monoclonius'
  • 'Monoclonius sphenocerus is recombined as Styracosaurus sphenocerus'
  • 'Monodelphia belongs to Mammalia'
  • 'Monodon belongs to Monodontinae'
  • 'Monodon monoceros belongs to Monodon'
  • 'Monodontinae belongs to Delphinidae'
  • 'Monotreta belongs to Reptilia'
  • 'Morosauridae is a subjective synonym of Camarasauridae'
  • 'Morosaurus is a subjective synonym of Camarasaurus'
  • 'Morosaurus agilis is recombined as Camarasaurus agilis'
  • 'Morosaurus impar is recombined as Camarasaurus impar'
  • 'Morosaurus lentus is recombined as Camarasaurus lentus'
  • 'Morosaurus robustus is recombined as Camarasaurus robustus'
  • 'Morphnus belongs to Buteoninae'
  • 'Morphnus daggetti is recombined as Wetmoregyps daggetti'
  • 'Morphnus woodwardi belongs to Morphnus'
  • 'Morus [misspelled as Moris] belongs to Sulidae'
  • 'Mosasauridae belongs to Mosasauriformes'
  • 'Mosasauriformes belongs to Sauria'
  • 'Mosasaurinae belongs to Mosasauridae'
  • 'Mosasaurus belongs to Mosasaurinae'
  • 'Mosasaurus belgicus belongs to Mosasaurus'
  • 'Mosasaurus caroliniensis is corrected as Mosasaurus carolinensis and belongs to Mosasaurus'
  • 'Mosasaurus copeanus belongs to Mosasaurus'
  • 'Mosasaurus couperi belongs to Mosasaurus'
  • 'Mosasaurus crassidens belongs to Mosasaurus'
  • 'Mosasaurus dekayi belongs to Mosasaurus'
  • 'Mosasaurus depressus belongs to Mosasaurus'
  • 'Mosasaurus fulciatus belongs to Mosasaurus'
  • 'Mosasaurus horridus belongs to Mosasaurus'
  • 'Mosasaurus maximus belongs to Mosasaurus'
  • 'Mosasaurus meirsii is corrected as Mosasaurus miersii and belongs to Mosasaurus'
  • 'Mosasaurus minor belongs to Mosasaurus'
  • 'Mosasaurus oarthrus belongs to Mosasaurus'
  • 'Mosasaurus princeps belongs to Mosasaurus'
  • 'Multituberculata belongs to Allotheria'
  • 'Muraenosaurus belongs to Plesiosauria'
  • 'Muraenosaurus leedsii belongs to Muraenosaurus'
  • 'Muraenosaurus reedii belongs to Muraenosaurus'
  • 'Mycteria belongs to Mycteriinae'
  • 'Mycteria americana belongs to Mycteria'
  • 'Mycterinae is corrected as Mycteriinae and belongs to Ciconiidae'
  • 'Mycterosaurus belongs to Glaucosauridae'
  • 'Mycterosaurus longiceps belongs to Mycterosaurus'
  • 'Mysticete belongs to Cete'
  • 'Naiadochelys belongs to Bothremydidae'
  • 'Naiadochelys ingravata belongs to Naiadochelys'
  • 'Nanomys is a subjective synonym of Cimolomys'
  • 'Nanomys minutus is recombined as Cimolomys minutus'
  • 'Nanopus caudatus belongs to Nanopus'
  • 'Nanopus maximus belongs to Nanopus' according to Gilmore 1927
  • 'Nanopus maximus belongs to Nanopus'
  • 'Nanopus merriami belongs to Nanopus' according to Gilmore 1926
  • 'Nanopus merriami belongs to Nanopus'
  • 'Nanopus quadratus is recombined as Dromillopus quadratus'
  • 'Nanopus vetustus belongs to Nanopus' according to Matthew 1910
  • 'Nanopus vetustus belongs to Nanopus'
  • 'Nanosauridae belongs to Iguanodontoidae'
  • 'Nanosaurus belongs to Nanosauridae'
  • 'Nanosaurus agilis belongs to Nanosaurus'
  • 'Nanosaurus rex belongs to Nanosaurus'
  • 'Nanosaurus victor is recombined as Hallopus victor'
  • 'Naocephalus belongs to Sauria'
  • 'Naocephalus porrectus belongs to Naocephalus'
  • 'Naomichelys belongs to Baenidae'
  • 'Naomichelys speciosa belongs to Naomichelys'
  • 'Naosauri is replaced by Edaphosauriformes'
  • 'Naosauridae is a subjective synonym of Edaphosauridae'
  • 'Naosaurus is a subjective synonym of Edaphosaurus'
  • 'Naosaurus claviger is recombined as Edaphosaurus claviger'
  • 'Naosaurus raymondi is recombined as Edaphosaurus raymondi'
  • 'Natrix belongs to Colubridae'
  • 'Natrix natrix belongs to Natrix'
  • 'Nautilornis belongs to Nautilornithinae'
  • 'Nautilornis avus belongs to Nautilornis'
  • 'Nautilornis proavitus belongs to Nautilornis'
  • 'Nautilornithinae belongs to Alcidae'
  • 'Nectoportheus belongs to Mosasaurinae'
  • 'Nectoportheus validus belongs to Nectoportheus'
  • 'Nectosaurus belongs to Thalattosauridae'
  • 'Nectosaurus halius belongs to Nectosaurus'
  • 'Neogyps belongs to Aegypiidae'
  • 'Neogyps errans belongs to Neogyps'
  • 'Neomorphinae belongs to Cuculidae'
  • 'Neomorphus belongs to Neomorphinae'
  • 'Neophrontops belongs to Aegypiidae'
  • 'Neophrontops americanus belongs to Neophrontops'
  • 'Neoplagiaulax belongs to Ptilodontidae'
  • 'Neoplagiaulax americanus is recombined as Eucosmodon americanus'
  • 'Neoplagiaulax molestus is recombined as Eucosmodon molestus'
  • 'Neptunochelys belongs to Desmatochelyidae'
  • 'Nettion belongs to Anatinae'
  • 'Neurankylus belongs to Pleurosternidae'
  • 'Neurankylus baueri belongs to Neurankylus'
  • 'Neurankylus eximius belongs to Neurankylus'
  • 'Neurankylus wyomingensis belongs to Neurankylus'
  • 'Neurodromicus belongs to Crotalidae'
  • 'Neurodromicus dorsalis belongs to Neurodromicus'
  • 'Nodosauridae belongs to Stegosauroidae'
  • 'Nodosaurus belongs to Nodosauridae'
  • 'Nodosaurus textilis belongs to Nodosaurus'
  • 'Notalacerta is a subjective synonym of Collettosaurus'
  • 'Notalacerta jacksonensis belongs to Notalacerta' according to Butts 1891
  • 'Notalacerta jacksonensis is recombined as Batrachichnus jacksonensis'
  • 'Notalacerta missouriensis is recombined as Collettosaurus missouriensis'
  • 'Notamphibia is a subjective synonym of Collettosaurus'
  • 'Notamphibia magna is recombined as Collettosaurus magnus'
  • 'Nothodon is a subjective synonym of Diadectes'
  • 'Nothodon lentus is recombined as Diadectes lentus'
  • 'Nothodontidae is a subjective synonym of Diadectidae'
  • 'Nothosaurops occiduus is recombined as Champsosaurus occiduus'
  • 'Notomorpha belongs to Dermatemydidae'
  • 'Notomorpha gravis belongs to Notomorpha'
  • 'Notomorpha testudinea is recombined as Echmatemys testudinea'
  • 'Nyctodactylus is a subjective synonym of Nyctosaurus'
  • 'Nyctosauridae was reranked as the subfamily Nyctosaurinae and belongs to Pteranodontidae'
  • 'Nyctosaurus belongs to Nyctosaurinae'
  • 'Nyssodon belongs to Pediomyinae'
  • 'Nyssodon punctidens belongs to Nyssodon'
  • 'Odaxosaurus belongs to Sauria'
  • 'Odaxosaurus obliquus belongs to Odaxosaurus'
  • 'Odobaenidae is corrected as Odobenidae and belongs to Pinnipedia'
  • 'Odobenus belongs to Odobenidae'
  • 'Odobenus virginianus belongs to Odobenus'
  • 'Odontoceti [misspelled as Odontocete] belongs to Cete'
  • 'Odontolcae is a subjective synonym of Hesperornithomorphi'
  • 'Odontophoridae was reranked as the subfamily Odontophorinae and belongs to Perdicidae'
  • 'Oedicnemidae belongs to Charadrioidae'
  • 'Ogmodirus belongs to Elasmosauridae'
  • 'Ogmodirus martinii belongs to Ogmodirus'
  • 'Ogmophis belongs to Boidae'
  • 'Ogmophis compactus belongs to Ogmophis'
  • 'Ogmophis oregonensis belongs to Ogmophis'
  • 'Ogmophus arenarum is recombined as Ogmophis arenarum'
  • 'Oidemia belongs to Fuligulinae'
  • 'Olbodotes is a subjective synonym of Mixodectes'
  • 'Olbodotes copei is recombined as Mixodectes copei'
  • 'Oligosimus belongs to Plesiosauria'
  • 'Oligosimus grandaevus belongs to Oligosimus'
  • 'Omorhamphus belongs to Diatrymatidae'
  • 'Omorhamphus storchii belongs to Omorhamphus'
  • 'Omphalosauria belongs to Catacritosauria'
  • 'Omphalosauridae belongs to Omphalosauria'
  • 'Omphalosaurus belongs to Omphalosauridae'
  • 'Omphalosaurus nevadanus belongs to Omphalosaurus'
  • 'Ontocetus oxymycterus belongs to Ontocetus'
  • 'Onychopus gigas belongs to Onychopus' according to Martin 1922
  • 'Onychopus gigas belongs to Onychopus'
  • 'Ophiacodon belongs to Ophiacodontidae'
  • 'Ophiacodon mirus belongs to Ophiacodon'
  • 'Ophiacodontidae belongs to Poliosauriformes'
  • 'Ophiodeirus belongs to Bolosauridae'
  • 'Ophiodeirus casei belongs to Ophiodeirus'
  • 'Ophthalmosauridae belongs to Ichthyosauria'
  • 'Ophthalmosaurus belongs to Ophthalmosauridae'
  • 'Ophthalmosaurus discus belongs to Ophthalmosaurus'
  • 'Ophthalmosaurus icenicus belongs to Ophthalmosaurus'
  • 'Opisthias belongs to Sphenodontidae'
  • 'Opisthias rarus belongs to Opisthias'
  • 'Opisthocoelia is a subjective synonym of Sauropoda'
  • 'Oracodon belongs to Ptilodontidae'
  • 'Oracodon anceps belongs to Oracodon'
  • 'Oracodon conulus belongs to Oracodon'
  • 'Oreortyx belongs to Odontophorinae'
  • 'Oreosaurus gracilis is recombined as Xestops gracilis'
  • 'Oreosaurus lentus is recombined as Xestops lentus'
  • 'Oreosaurus microdus is recombined as Xestops microdus'
  • 'Oreosaurus minutus is recombined as Xestops minutus'
  • 'Oreosaurus vagans is recombined as Xestops vagans'
  • 'Oriolus phoeniceus is recombined as Agelaius phoeniceus'
  • 'Ornithichnites culbertsoni is recombined as Anomoepus culbertsonii'
  • 'Ornithichnites deanii is recombined as Platypterna deaniana'
  • 'Steropoides divaricatus is a subjective synonym of Steropoides loripes'
  • 'Steropoides diversus is a subjective synonym of Steropoides elegans'
  • 'Ornithichnites gallinuloides is recombined as Anomoepus gallinuloides'
  • 'Ornithichnites giganteus is recombined as Eubrontes giganteus'
  • 'Ornithichnites gracilis is recombined as Grallator gracilis'
  • 'Ornithichnites ingens is recombined as Steropoides ingens'
  • 'Ornithichnites minimus is recombined as Argoides minimus'
  • 'Ornithichnites minusculus is recombined as Anchisauripus minusculus'
  • 'Ornithichnites parallelus is recombined as Anchisauripus parallelus'
  • 'Ornithichnites robustus is recombined as Argoides robustus'
  • 'Ornithichnites tetradactylus is recombined as Sillimanius tetradactylus'
  • 'Ornithichnites tuberosus is recombined as Anchisauripus tuberosus'
  • 'Ornithischia is a subjective synonym of Orthopoda'
  • 'Ornithocephalidae belongs to Ornithocephaliformes'
  • 'Ornithocephaliformes belongs to Pterosauri'
  • 'Ornithocephalinae belongs to Ornithocephalidae'
  • 'Ornithocephalus belongs to Ornithocephalinae'
  • 'Ornithocheiridae is a subjective synonym of Pteranodontidae'
  • 'Ornithoides adamsi belongs to Ornithoides'
  • 'Ornithoidichnites delicatulus is recombined as Platypterna delicatula'
  • 'Ornithoidichnites elegans is recombined as Steropoides elegans'
  • 'Ornithoidichnites expansus is recombined as Eubrontes expansus'
  • 'Ornithoidichnites gracilior is recombined as Sillimanius gracilior'
  • 'Ornithoidichnites gracillimus is recombined as Anomoepus gracillimus'
  • 'Ornithoidichnites isodactylus is recombined as Argoides isodactyletus'
  • 'Ornithoidichnites lyellii is recombined as Fulicopus lyellianus'
  • 'Ornithoidichnites macrodactylus is recombined as Argoides macrodactylotus'
  • 'Ornithoidichnites redfieldii is recombined as Argoides redfieldianus'
  • 'Ornithoidichnites rogersi is recombined as Palamopus rogersianus'
  • 'Anchisauripus sillimani is a subjective synonym of Anchisauripus dananus'
  • 'Ornithoidichnites tenuis is recombined as Platypterna tenuis'
  • 'Ornitholestes is a subjective synonym of Coelurus'
  • 'Ornitholestes hermanni is recombined as Coelurus hermanni'
  • 'Ornithomimidae belongs to Megalosauroidae'
  • 'Ornithomimipus angustus belongs to Ornithomimipus'
  • 'Ornithomimus belongs to Ornithomimidae'
  • 'Ornithomimus affinis is recombined as Coelosaurus affinis'
  • 'Ornithomimus altus belongs to Ornithomimus'
  • 'Ornithomimus grandis belongs to Ornithomimus'
  • 'Ornithomimus minutus belongs to Ornithomimus'
  • 'Ornithomimus sedens belongs to Ornithomimus'
  • 'Ornithomimus tenuis belongs to Ornithomimus'
  • 'Ornithomimus velox belongs to Ornithomimus'
  • 'Ornithopappi is a subjective synonym of Archaeopterygomorphi'
  • 'Ornithopus gallinaceus is a subjective synonym of Sillimanius tetradactylus'
  • 'Ornithopus loripes is recombined as Steropoides loripes'
  • 'Ornithotarsus belongs to Hadrosaurinae'
  • 'Ornithotarsus immanis belongs to Ornithotarsus'
  • 'Ornithurae is a subjective synonym of Eurhipidurae'
  • 'Orophosaurus belongs to Plesiosauria'
  • 'Orophosaurus pauciporus belongs to Orophosaurus'
  • 'Ortalis belongs to Penelopinae'
  • 'Ortalis motmot belongs to Ortalis'
  • 'Ortalis phengites belongs to Ortalis'
  • 'Orthodactylus floriferus belongs to Orthodactylus'
  • 'Orthodactylus introvergens belongs to Orthodactylus'
  • 'Orthodactylus linearis belongs to Orthodactylus'
  • 'Orthogenysuchus belongs to Crocodylidae'
  • 'Orthogenysuchus olseni belongs to Orthogenysuchus'
  • 'Orthopoda was reranked as a order and belongs to Dinosauria'
  • 'Ortyx picta is recombined as Oreortyx picta'
  • 'Orycterocetus belongs to Physeteridae'
  • 'Orycterocetus cornutidens belongs to Orycterocetus'
  • 'Orycterocetus quadratidens belongs to Orycterocetus'
  • 'Osteopygis belongs to Thalassemydidae'
  • 'Osteopygis chelydrinus belongs to Osteopygis'
  • 'Osteopygis emarginatus belongs to Osteopygis'
  • 'Osteopygis erosus belongs to Osteopygis'
  • 'Osteopygis gibbi belongs to Osteopygis'
  • 'Osteopygis platylomus belongs to Osteopygis'
  • 'Osteopygis repandus is recombined as Catapleura repanda'
  • 'Osteopygis robustus belongs to Osteopygis'
  • 'Ostodolepis belongs to Pantylidae'
  • 'Ostodolepis brevispinatus belongs to Ostodolepis'
  • 'Otaria californiana is recombined as Zalophus californiana'
  • 'Otariina was reranked as the family Otariidae and belongs to Pinnipedia'
  • 'Otocoris belongs to Alaudidae'
  • 'Ototriton belongs to Amphisbaenidae'
  • 'Ototriton solidus belongs to Ototriton'
  • 'Otouphepus magnificus belongs to Otouphepus'
  • 'Otouphepus minor belongs to Otouphepus'
  • 'Otozoum caudatum belongs to Otozoum'
  • 'Otozoum minus belongs to Otozoum'
  • 'Otozoum moodii belongs to Otozoum'
  • 'Otozoum parvum is recombined as Chirotherium parvum'
  • 'Otus belongs to Strigidae'
  • 'Otus wilsonianus is recombined as Asio wilsonianus'
  • 'Oxyechus belongs to Charadriinae'
  • 'Pachyrhynchus gosseleti is recombined as Erquelinnesia gosseleti'
  • 'Palaeoborus belongs to Vulturidae'
  • 'Palaeochenoides belongs to Cyphornithidae'
  • 'Palaeochenoides miocaenus [misspelled as Palaeochenoides mioceanus] belongs to Palaeochenoides'
  • 'Palaeocrex belongs to Gallinulinae'
  • 'Palaeocrex fax belongs to Palaeocrex'
  • 'Palaeoctonus belongs to Anchisauridae'
  • 'Palaeoctonus appalachianus belongs to Palaeoctonus'
  • 'Palaeoctonus aulacodus is recombined as Suchoprion aulacodus'
  • 'Palaeoctonus dumblianus belongs to Palaeoctonus'
  • 'Palaeoctonus orthodon belongs to Palaeoctonus'
  • 'Palaeogyps belongs to Vulturidae'
  • 'Palaeogyps prodromus belongs to Palaeogyps'
  • 'Palaeonornis belongs to Aves'
  • 'Palaeonornis struthionoides belongs to Palaeonornis'
  • 'Palaeophasianus belongs to Phasianinae'
  • 'Palaeophasianus meleagroides belongs to Palaeophasianus'
  • 'Palaeophidae belongs to Serpentes'
  • 'Palaeophis belongs to Palaeophidae'
  • 'Palaeophis halidanus belongs to Palaeophis'
  • 'Palaeophis littoralis belongs to Palaeophis'
  • 'Palaeophis toliapicus belongs to Palaeophis'
  • 'Palaeopus regularis belongs to Palaeopus' according to Gilmore 1926
  • 'Palaeopus regularis belongs to Palaeopus'
  • 'Palaeosaniwa belongs to Saniwinae'
  • 'Palaeosaniwa canadensis belongs to Palaeosaniwa'
  • 'Palaeosaurus fraserianus is recombined as Clepsysaurus fraserianus'
  • 'Palaeoscincus belongs to Nodosauridae'
  • 'Palaeoscincus asper belongs to Palaeoscincus'
  • 'Palaeoscincus costatus belongs to Palaeoscincus'
  • 'Palaeoscincus latus belongs to Palaeoscincus'
  • 'Palaeoscincus magoder is a nomen nudum'
  • 'Palaeospiza belongs to Palaeospizidae'
  • 'Palaeospiza bella belongs to Palaeospiza'
  • 'Palaeospiza hatcheri is recombined as Palaeostruthus hatcheri'
  • 'Palaeospizidae belongs to Fringilloidae'
  • 'Palaeostruthus belongs to Fringillinae'
  • 'Palaeotetrix belongs to Tetraonidae'
  • 'Palaeotetrix gillii belongs to Palaeotetrix'
  • 'Palaeotheca belongs to Emydidae'
  • 'Palaeotheca polycypha belongs to Palaeotheca'
  • 'Palaeotheca terrestris belongs to Palaeotheca'
  • 'Palaeotringa belongs to Tringinae'
  • 'Palaeotringa littoralis belongs to Palaeotringa'
  • 'Palaeotringa vagans belongs to Palaeotringa'
  • 'Palaeotringa vetus belongs to Palaeotringa'
  • 'Palamopus anomalus belongs to Palamopus'
  • 'Palamopus clarki is a subjective synonym of Eupalamopus dananus'
  • 'Palamopus dananus is recombined as Eupalamopus dananus'
  • 'Palamopus palmatus belongs to Palamopus'
  • 'Paleorhinus is corrected as Palaeorhinus and belongs to Phytosauridae'
  • 'Paleorhinus bransoni is recombined as Palaeorhinus bransoni'
  • 'Paleorhinus parvus is recombined as Palaeorhinus parvus'
  • 'Pandion belongs to Pandioninae'
  • 'Pandionidae was reranked as the subfamily Pandioninae and belongs to Falconidae'
  • 'Panoplosaurus belongs to Nodosauridae'
  • 'Panoplosaurus mirus belongs to Panoplosaurus'
  • 'Pantosaurus belongs to Plesiosauria'
  • 'Pantotheria belongs to Allotheria'
  • 'Pantylidae belongs to Pantyliformes'
  • 'Pantyliformes belongs to Cotylosauria'
  • 'Pantylosauria is replaced by Pantyliformes'
  • 'Pantylus belongs to Pantylidae'
  • 'Pantylus coicodus belongs to Pantylus'
  • 'Pantylus cordatus belongs to Pantylus'
  • 'Pantylus tryptychus belongs to Pantylus' according to Cummins 1908
  • 'Pantylus tryptychus belongs to Pantylus'
  • 'Paracetus mediatlanticus is recombined as Orycterocetus mediatlanticus'
  • 'Parapavo belongs to Meleagridae'
  • 'Parasaniwa belongs to Saniwinae'
  • 'Parasaniwa obtusa belongs to Parasaniwa'
  • 'Parasaniwa wyomingensis belongs to Parasaniwa'
  • 'Parasaurolophus belongs to Lambeosaurinae'
  • 'Parasaurolophus walkeri belongs to Parasaurolophus'
  • 'Parasauromalus belongs to Iguanidae'
  • 'Parasauromalus olseni is corrected as Parasauromalus olsenii and belongs to Parasauromalus'
  • 'Parasaurus striatus is recombined as Pantosaurus striatus'
  • 'Parasuchia is a subjective synonym of Phytosauromorphi'
  • 'Pareiasauria is replaced by Pareiasauriformes'
  • 'Pareiasauridae belongs to Pareiasauriformes'
  • 'Pareiasauriformes belongs to Cotylosauria'
  • 'Pareiasaurus belongs to Pareiasauridae'
  • 'Pareiasaurus henneni belongs to Pareiasaurus'
  • 'Parietobalaena belongs to Cetotheriidae'
  • 'Parietobalaena palmeri belongs to Parietobalaena'
  • 'Pariotichidae belongs to Captorhiniformes'
  • 'Pariotichus belongs to Pariotichidae'
  • 'Pariotichus aduncus is recombined as Captorhinus aduncus'
  • 'Pariotichus brachyops belongs to Pariotichus'
  • 'Pariotichus hamatus is recombined as Labidosaurus hamatus'
  • 'Pariotichus isolomus is recombined as Captorhinus isolomus'
  • 'Pariotichus laticeps belongs to Pariotichus'
  • 'Pariotichus megalops is recombined as Isodectes megalops'
  • 'Paronychodon belongs to Allotheria'
  • 'Paronychodon lacustris belongs to Paronychodon'
  • 'Passeriformes was reranked as a suborder and belongs to Carinatae'
  • 'Paurodon belongs to Paurodontidae'
  • 'Paurodon valens belongs to Paurodon'
  • 'Paurodontidae belongs to Pantotheria'
  • 'Pavo californicus is recombined as Parapavo californicus'
  • 'Pediocaetes is corrected as Pedioecetes and belongs to Tetraonidae'
  • 'Pediocaetes lucasi is recombined as Pedioecetes lucasi'
  • 'Pediocaetes nanus is recombined as Pedioecetes nanus'
  • 'Pediomyinae belongs to Didelphidae'
  • 'Pediomys belongs to Pediomyinae'
  • 'Pediomys elegans belongs to Pediomys'
  • 'Pelecanidae belongs to Pelecanoidae'
  • 'Pelecaniformes was reranked as a suborder and belongs to Carinatae'
  • 'Pelecanoidea is corrected as Pelecanoidae and belongs to Pelecaniformes'
  • 'Pelecanus belongs to Pelecanidae'
  • 'Pelecanus bassanus [misspelled as Moris bassanus] belongs to Morus'
  • 'Pelecanus carbo is recombined as Phalacrocorax carbo'
  • 'Pelecanus erythrorhynchos belongs to Pelecanus'
  • 'Pelecanus onocrotalus belongs to Pelecanus' according to Linnaaeus 1758
  • 'Pelecanus onocrotalus belongs to Pelecanus'
  • 'Pelecanus piscator belongs to Pelecanus' according to Linnaeus 1758
  • 'Pelecanus piscator is recombined as Sula piscator'
  • 'Pelicopsis belongs to Dryolestidae'
  • 'Pelicopsis dubius belongs to Pelicopsis'
  • 'Pelidna belongs to Tringinae'
  • 'Peltosaurus belongs to Anguidae'
  • 'Peltosaurus abbotti belongs to Peltosaurus'
  • 'Peltosaurus granulosus belongs to Peltosaurus'
  • 'Peltosaurus piger belongs to Peltosaurus'
  • 'Pelycorhamphus belongs to Ziphiinae'
  • 'Pelycorhamphus pertortus belongs to Pelycorhamphus'
  • 'Pelycosauria is replaced by Sphenacodontiformes'
  • 'Penelopinae belongs to Cracidae'
  • 'Pentaceratops belongs to Ceratopsidae'
  • 'Pentaceratops sternbergii belongs to Pentaceratops'
  • 'Perdicidae belongs to Galloidae'
  • 'Peritresius belongs to Cheloniidae'
  • 'Petrochelidon belongs to Hirundinidae'
  • 'Phalacrocoracidae belongs to Suloidae'
  • 'Phalacrocorax belongs to Phalacrocoracidae'
  • 'Phalacrocorax marinavis belongs to Phalacrocorax'
  • 'Phalacrocorax mediterraneus belongs to Phalacrocorax'
  • 'Phalacrocorax perspicillatus belongs to Phalacrocorax'
  • 'Phalarodon belongs to Shastasaurinae'
  • 'Phalarodon fraasi belongs to Phalarodon'
  • 'Phalaropodidae belongs to Charadrioidae'
  • 'Phascolodon belongs to Amphilestinae'
  • 'Phascolodon gidleyi belongs to Phascolodon'
  • 'Phasianidae belongs to Galloidae'
  • 'Phasianinae belongs to Phasianidae'
  • 'Phasianus belongs to Phasianinae'
  • 'Phasianus alfhildae belongs to Phasianus'
  • 'Phasianus americanus belongs to Phasianus'
  • 'Phasianus colchicus belongs to Phasianus'
  • 'Phasianus mioceanus belongs to Phasianus'
  • 'Phasmagyps belongs to Vulturidae'
  • 'Phasmagyps patritus belongs to Phasmagyps'
  • 'Phobosuchus belongs to Crocodylidae'
  • 'Phoca belongs to Phocinae'
  • 'Phoca barbata is recombined as Erignathus barbatus'
  • 'Phoca carcinophaga is recombined as Lobodon carcinophaga'
  • 'Phoca cristata is recombined as Cystophora cristata'
  • 'Phoca debilis is recombined as Delphinodon debilis'
  • 'Phoca groenlandica belongs to Phoca'
  • 'Phoca hispida belongs to Phoca' according to Schreber 1775
  • 'Phoca hispida belongs to Phoca'
  • 'Phoca jubata is recombined as Eumetopias jubata'
  • 'Phoca modesta belongs to Phoca'
  • 'Phoca rosmarus is recombined as Odobenus rosmarus'
  • 'Phoca stelleri is recombined as Eumetopias stelleri'
  • 'Phoca vitulina belongs to Phoca'
  • 'Phoca wymani belongs to Phoca'
  • 'Phocadae is corrected as Phocidae and belongs to Pinnipedia'
  • 'Phocageneus venustus is recombined as Delphinodon venustus'
  • 'Phocinae belongs to Phocidae'
  • 'Phoenicopteridae belongs to Phoenicopteroidae'
  • 'Phoenicopteroidea [misspelled as Phoenicopteroidae] belongs to Ciconiiformes'
  • 'Phoenicopterus belongs to Phoenicopteridae'
  • 'Phoenicopterus copei belongs to Phoenicopterus'
  • 'Phoenicopterus ruber belongs to Phoenicopterus'
  • 'Pholidosauridae belongs to Goniopholidiformes'
  • 'Phrynosoma belongs to Iguanidae'
  • 'Physeter belongs to Physeteridae'
  • 'Physeter catodon belongs to Physeter'
  • 'Physeteridae belongs to Odontocete'
  • 'Phytosauria is a subjective synonym of Phytosauriformes'
  • 'Phytosauridae belongs to Phytosauriformes'
  • 'Phytosauriformes belongs to Phytosauromorphi'
  • 'Phytosauromorphi belongs to Loricata'
  • 'Phytosaurus belongs to Phytosauridae'
  • 'Phytosaurus cylindricodon belongs to Phytosaurus'
  • 'Phytosaurus doughtyi belongs to Phytosaurus'
  • 'Picidae belongs to Picoidae'
  • 'Piciformes was reranked as a suborder and belongs to Carinatae'
  • 'Picoidea is corrected as Picoidae and belongs to Piciformes'
  • 'Picrodus belongs to Allotheria'
  • 'Picrodus silberlingi belongs to Picrodus'
  • 'Picus cafer is recombined as Colaptes cafer'
  • 'Pinguinus belongs to Alcinae'
  • 'Pipilo belongs to Fringillinae'
  • 'Piptomerus belongs to Plesiosauria'
  • 'Piptomerus hexagonus belongs to Piptomerus'
  • 'Piptomerus megaloporus belongs to Piptomerus'
  • 'Piptomerus microporus belongs to Piptomerus'
  • 'Piratosaurus belongs to Plesiosauria'
  • 'Piratosaurus plicatus belongs to Piratosaurus'
  • 'Pithanotaria belongs to Otariidae'
  • 'Pithanotaria starri belongs to Pithanotaria'
  • 'Placerias belongs to Dicynodontidae'
  • 'Placerias hesternus belongs to Placerias'
  • 'Placosaurus belongs to Chamaelonidae'
  • 'Placosaurus rugosus belongs to Placosaurus'
  • 'Plagiaulacidae belongs to Plagiaulacoidae'
  • 'Plagiaulacoidea [misspelled as Plagiaulacoidae] belongs to Multituberculata'
  • 'Plagiaulax belongs to Plagiaulacidae'
  • 'Plagiaulax becklesii belongs to Plagiaulax'
  • 'Plastomenidae belongs to Trionychoidae'
  • 'Plastomenus belongs to Plastomenidae'
  • 'Plastomenus acupictus belongs to Plastomenus'
  • 'Plastomenus catenatus belongs to Plastomenus'
  • 'Plastomenus coalescens is recombined as Aspideretes coalescens'
  • 'Plastomenus communis belongs to Plastomenus'
  • 'Plastomenus corrugatus belongs to Plastomenus'
  • 'Plastomenus costatus belongs to Plastomenus'
  • 'Plastomenus fractus belongs to Plastomenus'
  • 'Plastomenus insignis belongs to Plastomenus'
  • 'Plastomenus lachrymalis belongs to Plastomenus'
  • 'Plastomenus punctulatus belongs to Plastomenus'
  • 'Plastomenus robustus belongs to Plastomenus'
  • 'Plastomenus serialis is recombined as Platypeltis serialis'
  • 'Plastomenus tantillus belongs to Plastomenus'
  • 'Plastomenus torrejonensis belongs to Plastomenus'
  • 'Plastomenus visendus belongs to Plastomenus'
  • 'Platalea ajaja is recombined as Ajaja ajaja'
  • 'Plataleidae belongs to Plataleoidae'
  • 'Plataleoidae belongs to Ciconiiformes'
  • 'Platanistina was reranked as the family Platanistidae and belongs to Odontocete'
  • 'Platanistinae belongs to Platanistidae'
  • 'Platecarpinae belongs to Mosasauridae'
  • 'Platecarpus belongs to Platecarpinae'
  • 'Platecarpus brachycephalus belongs to Platecarpus'
  • 'Platecarpus clidastoides belongs to Platecarpus'
  • 'Platecarpus latispinus belongs to Platecarpus'
  • 'Platecarpus oxyrhinus belongs to Platecarpus'
  • 'Platecarpus tuberosus is recombined as Neptunochelys tuberosa'
  • 'Platecarpus tympaniticus belongs to Platecarpus'
  • 'Platemys sulcatus is recombined as Taphrosphys sulcatus'
  • 'Platypeltis belongs to Trionychidae'
  • 'Platypeltis amnicola belongs to Platypeltis'
  • 'Platypeltis antiqua belongs to Platypeltis'
  • 'Platypeltis extensa belongs to Platypeltis'
  • 'Platypeltis miocaenus is corrected as Platypeltis miocaena and belongs to Platypeltis'
  • 'Platypeltis postera belongs to Platypeltis'
  • 'Platypeltis trepida belongs to Platypeltis'
  • 'Platypterna digitigrada belongs to Platypterna'
  • 'Platypterna gracillima belongs to Platypterna'
  • 'Platyrhachis coloradoensis is recombined as Rhineura coloradoensis'
  • 'Platyrhachis rhambastes is recombined as Cremastosaurus rhambastes'
  • 'Plectropterna angusta belongs to Plectropterna'
  • 'Plectropterna elegans belongs to Plectropterna'
  • 'Plectropterna gracilis belongs to Plectropterna'
  • 'Plectropterna lineans belongs to Plectropterna'
  • 'Plegadis belongs to Ibididae'
  • 'Pleistogyps is a subjective synonym of Teratornis'
  • 'Pleistogyps rex belongs to Pleistogyps' according to Miller 1910
  • 'Pleistogyps rex is a subjective synonym of Teratornis merriami'
  • 'Plesiocetus occidentalis is recombined as Plesiocetopsis occidentalis'
  • 'Plesiochelys belviderensis is recombined as Glyptops belviderensis'
  • 'Plesiornis aequalipes is a subjective synonym of Argoides minimus'
  • 'Plesiornis giganteus belongs to Plesiornis'
  • 'Plesiornis mirabilis belongs to Plesiornis'
  • 'Plesiornis pilulatus belongs to Plesiornis'
  • 'Plesiornis quadrupes is a subjective synonym of Anomoepus intermedius'
  • 'Plesiosauria belongs to Catacritosauria'
  • 'Plesiosauridae belongs to Plesiosauriformes'
  • 'Plesiosauriformes belongs to Plesiosauria'
  • 'Plesiosaurus belongs to Plesiosauridae'
  • 'Plesiosaurus (Polyptychodon) mexicanus is recombined as Plesiosaurus mexicanus'
  • 'Plesiosaurus brevifemur belongs to Plesiosaurus'
  • 'Plesiosaurus dolichodeirus belongs to Plesiosaurus'
  • 'Plesiosaurus gouldii belongs to Plesiosaurus'
  • 'Plesiosaurus gulo belongs to Plesiosaurus'
  • 'Plesiosaurus lockwoodii is recombined as Taphrosaurus lockwoodi'
  • 'Plesiosaurus mudgei belongs to Plesiosaurus'
  • 'Plesiosaurus shirleyensis belongs to Plesiosaurus'
  • 'Plestiodon anthracinus belongs to Plestiodon' according to Baird 1850
  • 'Plestiodon anthracinus is recombined as Eumeces anthracinus'
  • 'Pleuristion belongs to Captorhinidae'
  • 'Pleuristion brachycoelous belongs to Pleuristion'
  • 'Pleurocoelidae is a subjective synonym of Camarasauridae'
  • 'Pleurocoelus is a subjective synonym of Astrodon'
  • 'Pleurocoelus altus is recombined as Astrodon altus'
  • 'Pleurocoelus montanus is recombined as Astrodon montanus'
  • 'Pleurocoelus nanus is recombined as Astrodon nanus'
  • 'Pleurodira is replaced by Chelydoidae'
  • 'Pleurosternidae belongs to Pleurosternoidae'
  • 'Pleurosternoidae belongs to Thecophora'
  • 'Pleurosternum pectorale is recombined as Agomphus pectoralis'
  • 'Pliogonodon belongs to Crocodylidae'
  • 'Pliogonodon priscus belongs to Pliogonodon'
  • 'Pliopedia belongs to Otariidae'
  • 'Pliopedia pacifica belongs to Pliopedia'
  • 'Pneumatoarthrus belongs to Hadrosaurinae'
  • 'Pneumatoarthrus peloreus belongs to Pneumatoarthrus'
  • 'Podiceps holbollii [misspelled as Colymbus holboelii] belongs to Colymbus'
  • 'Podiceps nigricollis is recombined as Colymbus nigricollis'
  • 'Podiceps occidentalis is recombined as Aechmophorus occidentalis'
  • 'Podilymbus belongs to Colymbidae'
  • 'Podilymbus magnus belongs to Podilymbus'
  • 'Podokesauridae belongs to Coeluroidae'
  • 'Podokesaurus belongs to Podokesauridae'
  • 'Podokesaurus holyokensis belongs to Podokesaurus'
  • 'Poeciloglyptica belongs to Reptilia'
  • 'Poecilospondylus belongs to Poliosauridae'
  • 'Poecilospondylus francisi belongs to Poecilospondylus'
  • 'Poicilopleuron valens is recombined as Antrodemus valens'
  • 'Polemarchus gigas belongs to Polemarchus'
  • 'Poliosauridae belongs to Poliosauriformes'
  • 'Poliosauriformes belongs to Sphenacodontomorphi'
  • 'Poliosaurus belongs to Poliosauridae'
  • 'Polyborinae belongs to Falconidae'
  • 'Polyborus belongs to Polyborinae'
  • 'Polycotylidae belongs to Plesiosauria'
  • 'Polycotylus belongs to Polycotylidae'
  • 'Polycotylus dolichopus belongs to Polycotylus'
  • 'Polycotylus ischiadicus is recombined as Elasmosaurus ischiadicus'
  • 'Polycotylus latipinnis belongs to Polycotylus'
  • 'Polydectes belongs to Crocodylidae'
  • 'Polydectes biturgidus belongs to Polydectes'
  • 'Polygonodon belongs to Mosasaurinae'
  • 'Polygonodon rectus belongs to Polygonodon'
  • 'Polygonodon vetus belongs to Polygonodon'
  • 'Polymastodon belongs to Polymastodontidae'
  • 'Polymastodon attenuatus belongs to Polymastodon'
  • 'Polymastodon latimolis belongs to Polymastodon'
  • 'Polymastodon selenodus belongs to Polymastodon'
  • 'Polymastodon taoensis belongs to Polymastodon'
  • 'Polymastodontidae belongs to Plagiaulacoidae'
  • 'Polyonax belongs to Ceratopsidae'
  • 'Polyonax mortuarius belongs to Polyonax'
  • 'Polyprotodonta was reranked as the suborder Polyprotodontia and belongs to Marsupialia'
  • 'Polyptchodon rugosus is recombined as Crocodylus rugosus'
  • 'Polysticta belongs to Fuligulinae'
  • 'Polythorax belongs to Baenidae'
  • 'Polythorax missuriensis belongs to Polythorax'
  • 'Pomatodelphis belongs to Delphininae'
  • 'Pomatodelphis inaequalis belongs to Pomatodelphis'
  • 'Pontobasileus belongs to Basilosauridae'
  • 'Pontobasileus tuberculatus belongs to Pontobasileus'
  • 'Pontoleon magnus is recombined as Pontolis magnus'
  • 'Pontolis belongs to Otariidae'
  • 'Poposaurus belongs to Anchisauridae'
  • 'Poposaurus gracilis belongs to Poposaurus'
  • 'Porthochelys belongs to Toxochelyidae'
  • 'Porthochelys browni belongs to Porthochelys'
  • 'Porthochelys laticeps belongs to Porthochelys'
  • 'Predentata is a subjective synonym of Orthopoda'
  • 'Presbyornis belongs to Presbyornithidae'
  • 'Presbyornis pervetus belongs to Presbyornis'
  • 'Presbyornithidae belongs to Charadrioidae'
  • 'Priacodon belongs to Triconodontinae'
  • 'Priacodon grandaevus belongs to Priacodon'
  • 'Priacodon lulli belongs to Priacodon'
  • 'Priconodon belongs to Nodosauridae'
  • 'Priconodon crassus belongs to Priconodon'
  • 'Prionosaurus belongs to Sauria'
  • 'Prionosaurus regularis belongs to Prionosaurus'
  • 'Priscodelphinus belongs to Eurhinodelphinae'
  • 'Priscodelphinus acutidens is recombined as Champsodelphis acutidens'
  • 'Priscodelphinus atropius is recombined as Belosphys atropius'
  • 'Priscodelphinus crassangulum is recombined as Cyrtodelphis crassangulum'
  • 'Priscodelphinus grandaevus belongs to Priscodelphinus'
  • 'Priscodelphinus harlani belongs to Priscodelphinus'
  • 'Priscodelphinus spinosus is recombined as Belosphys spinosus'
  • 'Priscodelphinus stenus belongs to Priscodelphinus'
  • 'Probaena belongs to Baenidae'
  • 'Probaena sculpta belongs to Probaena'
  • 'Procellaria glacialis is recombined as Fulmarus glacialis'
  • 'Procellaria puffinus is recombined as Puffinus puffinus'
  • 'Procellariidae belongs to Procellarioidae'
  • 'Procellariiformes was reranked as a suborder and belongs to Carinatae'
  • 'Procellaroidea is corrected as Procellarioidae and belongs to Procellariiformes'
  • 'Proceratops is a subjective synonym of Ceratops'
  • 'Procheneosaurus belongs to Saurolophinae'
  • 'Procolophonidae belongs to Diadectiformes'
  • 'Procolpochelys belongs to Cheloniidae'
  • 'Proictinia belongs to Milvinae'
  • 'Proictinia effera belongs to Proictinia'
  • 'Proictinia gilmorei belongs to Proictinia'
  • 'Promystriosuchus belongs to Phytosauridae'
  • 'Promystriosuchus ehlersi belongs to Promystriosuchus'
  • 'Propleura borealis is recombined as Osteopygis borealis'
  • 'Prorosmarus belongs to Odobenidae'
  • 'Prorosmarus alleni belongs to Prorosmarus'
  • 'Proroziphius chonops belongs to Proroziphius'
  • 'Proroziphius macrops belongs to Proroziphius'
  • 'Prosaurolophus belongs to Saurolophinae'
  • 'Prosaurolophus maximus belongs to Prosaurolophus'
  • 'Protagras belongs to Crotalidae'
  • 'Protagras lacustris belongs to Protagras'
  • 'Proteosauridae belongs to Ichthyosauria'
  • 'Proteosaurus belongs to Proteosauridae'
  • 'Protodonta belongs to Prototheria'
  • 'Protolambda is a subjective synonym of Pediomys'
  • 'Protolambda hatcheri is recombined as Pediomys hatcheri'
  • 'Protorosaurus is replaced by Chasmosaurus'
  • 'Protostega belongs to Protostegidae'
  • 'Protostega advena belongs to Protostega'
  • 'Protostega copei belongs to Protostega'
  • 'Protostega gigas belongs to Protostega'
  • 'Protostega potens belongs to Protostega'
  • 'Protostegidae belongs to Chelonioidae'
  • 'Prototheria belongs to Mammalia'
  • 'Protoziphius is corrected as Proroziphius and belongs to Ziphiinae'
  • 'Psalodon belongs to Plagiaulacidae'
  • 'Psarocolius cyanocephalus is recombined as Euphagus cyanocephalus'
  • 'Psarocolius gubernator belongs to Psarocolius' according to Wagler 1832
  • 'Psarocolius gubernator is recombined as Agelaius gubernator'
  • 'Psephophorus belongs to Dermochelyidae'
  • 'Psephophorus calvertensis belongs to Psephophorus'
  • 'Psephophorus polygonus belongs to Psephophorus'
  • 'Pseudemys belongs to Emydidae'
  • 'Pseudemys bisornatus is recombined as Trachemys bisornata'
  • 'Pseudemys caelata belongs to Pseudemys'
  • 'Pseudemys extincta belongs to Pseudemys'
  • 'Pseudemys hillii is recombined as Trachemys hilli'
  • 'Pseudogryphus is a subjective synonym of Gymnogyps'
  • 'Pseudolabis (Paralabis) matthewi is recombined as Pseudolabis matthewi'
  • 'Pseudopalatus belongs to Phytosauridae'
  • 'Pseudopalatus pristinus belongs to Pseudopalatus'
  • 'Pseudosuchia is a subjective synonym of Aetosauriformes'
  • 'Psittacidae belongs to Psittaciformes'
  • 'Psittaciformes was reranked as a suborder and belongs to Carinatae'
  • 'Psittacus carolinensis is recombined as Conuropsis carolinensis'
  • 'Pteranodon belongs to Pteranodontinae'
  • 'Pteranodon comptus belongs to Pteranodon'
  • 'Pteranodon gracilis is recombined as Nyctosaurus gracilis'
  • 'Pteranodon longiceps belongs to Pteranodon'
  • 'Pteranodon nanus is recombined as Nyctosaurus nanus'
  • 'Pteranodon oregonensis belongs to Pteranodon'
  • 'Pteranodontidae belongs to Ornithocephaliformes'
  • 'Pteranodontinae belongs to Pteranodontidae'
  • 'Pterodactylidae is a subjective synonym of Ornithocephalidae'
  • 'Pterodactyloidea is a subjective synonym of Ornithocephaliformes'
  • 'Pterodactylus is a subjective synonym of Ornithocephalus'
  • 'Pterodactylus ingens is recombined as Pteranodon ingens'
  • 'Pterodactylus longispinis is recombined as Rhabdopelix longispinis'
  • 'Pterodactylus montanus is recombined as Dermodactylus montanus'
  • 'Pterodactylus occidentalis is recombined as Pteranodon occidentalis'
  • 'Pterodactylus velox is recombined as Pteranodon velox'
  • 'Pteropelyx belongs to Hadrosaurinae'
  • 'Pteropelyx grallipes belongs to Pteropelyx'
  • 'Pteroptochidae belongs to Formicaroidae'
  • 'Pterosauria is corrected as Pterosauri and belongs to Loricata'
  • 'Pterosphenus belongs to Palaeophidae'
  • 'Pterosphenus schucherti belongs to Pterosphenus'
  • 'Ptilodontidae belongs to Plagiaulacoidae'
  • 'Ptilodus belongs to Ptilodontidae'
  • 'Ptilodus admirabilis belongs to Ptilodus'
  • 'Ptilodus gracilis belongs to Ptilodus' according to Gidley 1909
  • 'Ptilodus gracilis is replaced by Ptilodus admirabilis'
  • 'Ptilodus mediaevus belongs to Ptilodus'
  • 'Ptilodus montanus belongs to Ptilodus'
  • 'Ptilodus primaevus belongs to Ptilodus'
  • 'Ptilodus trovessartianus belongs to Ptilodus'
  • 'Puercosaurus belongs to Pariotichidae'
  • 'Puercosaurus obtusidens belongs to Puercosaurus'
  • 'Puffininae belongs to Procellariidae'
  • 'Puffinus belongs to Puffininae'
  • 'Puffinus conradi belongs to Puffinus'
  • 'Puffinus diatomicus [misspelled as Puffinus diatomaticus] belongs to Puffinus'
  • 'Puffinus opisthomelas belongs to Puffinus'
  • 'Pythonomorpha is a subjective synonym of Mosasauriformes'
  • 'Querquedula belongs to Anatinae'
  • 'Querquedula floridiana belongs to Querquedula'
  • 'Rallidae belongs to Ralloidae'
  • 'Ralliformes was reranked as a suborder and belongs to Carinatae'
  • 'Rallinae belongs to Rallidae'
  • 'Ralloidea is corrected as Ralloidae and belongs to Ralliformes'
  • 'Rallus belongs to Rallinae'
  • 'Rallus aquaticus belongs to Rallus'
  • 'Rallus virginianus belongs to Rallus' according to C. Linnaeus 1766
  • 'Rallus virginianus belongs to Rallus'
  • 'Ratitae was reranked as a order and belongs to Eurhipidurae'
  • 'Recurvirostra belongs to Recurvirostridae'
  • 'Recurvirostra americana belongs to Recurvirostra'
  • 'Recurvirostra avosetta [misspelled as Recurvirostra avocetta] belongs to Recurvirostra'
  • 'Recurvirostridae belongs to Charadrioidae'
  • 'Reptilia belongs to Vertebrata'
  • 'Rhabdopelix belongs to Tribelesodontidae'
  • 'Rhabdosteus belongs to Delphininae'
  • 'Rhabdosteus latiradix belongs to Rhabdosteus'
  • 'Rhegnopsis belongs to Cetotheriidae'
  • 'Rhetechelys belongs to Thalassemydidae'
  • 'Rhineura belongs to Leposternidae'
  • 'Rhineura hatcherii belongs to Rhineura'
  • 'Rhinosaurus micromus is recombined as Tylosaurus micromus'
  • 'Rhynchocephalia belongs to Eoditremata'
  • 'Rutiodon belongs to Phytosauridae'
  • 'Rutiodon carolinensis belongs to Rutiodon'
  • 'Rutiodon manhattanensis belongs to Rutiodon'
  • 'Saniwa major is a subjective synonym of Saniwa ensidens'
  • 'Saniwa belongs to Saniwinae'
  • 'Saniwa ensidens belongs to Saniwa'
  • 'Saniwinae belongs to Varanidae'
  • 'Sarcorhamphus clarki is recombined as Vultur clarki'
  • 'Sastrilophus dehmi is a nomen dubium'
  • 'Sauranodon natans is recombined as Ophthalmosaurus natans'
  • 'Sauravidae belongs to Sauraviformes'
  • 'Sauraviformes belongs to Cotylosauria'
  • 'Sauria belongs to Squamata'
  • 'Saurischia belongs to Dinosauria'
  • 'Sauriurae was reranked as the superorder Saururae and belongs to Aves'
  • 'Saurocetus belongs to Squalodontidae'
  • 'Saurocetus gibbesii belongs to Saurocetus'
  • 'Sauroidichnites abnormis is recombined as Typopus abnormis'
  • 'Sauroidichnites baileyi is recombined as Triaenopus baileyanus'
  • 'Sauroidichnites barrattii [misspelled as Sauropus barratii] belongs to Sauropus'
  • 'Sauroidichnites deweyi is recombined as Batrachopus deweyanus'
  • 'Sauroidichnites heteroclitus is recombined as Ancyropus heteroclitus'
  • 'Sauroidichnites minitans is recombined as Plectropterna minitans'
  • 'Sauroidichnites polemarchius is a subjective synonym of Polemarchus gigas'
  • 'Sauroidichnites tenuissimus is recombined as Harpedactylus tenuissimus'
  • 'Saurolophinae belongs to Hadrosauridae'
  • 'Saurolophus belongs to Saurolophinae'
  • 'Saurolophus osborni belongs to Saurolophus'
  • 'Sauropoda was reranked as a suborder and belongs to Saurischia'
  • 'Sauropterygia is a subjective synonym of Plesiosauria'
  • 'Sauropus antiquior is recombined as Palaeosauropus antiquior'
  • 'Sauropus primaevus is recombined as Palaeosauropus primaevus'
  • 'Sauropus sydnensis is recombined as Baropezia sydnensis'
  • 'Sauropus unguifer is recombined as Pseudobradypus unguifer'
  • 'Saurothera californiana is recombined as Geococcyx californianus'
  • 'Scelidosauridae belongs to Stegosauroidae'
  • 'Schizodelphis depressus is recombined as Cyrtodelphis depressus'
  • 'Scincidae belongs to Scincoidae'
  • 'Scincoidae belongs to Anguiformes'
  • 'Scolecophagus affinis is recombined as Euphagus affinis'
  • 'Scoliomus belongs to Poliosauridae'
  • 'Scoliomus puercensis belongs to Scoliomus'
  • 'Scolopacidae belongs to Charadriiformes'
  • 'Scolopacinae belongs to Scolopacidae'
  • 'Scolopax grisea is recombined as Macrorhamphus griseus'
  • 'Scolopax guarauna is recombined as Plegadis guarauna'
  • 'Scolopax limosa is recombined as Limosa limosa'
  • 'Scolopax melanoleuca is recombined as Totanus melanoleucus'
  • 'Selenacodon is a subjective synonym of Meniscoessus'
  • 'Selenacodon brevis is recombined as Meniscoessus brevis'
  • 'Selenacodon fragilis is recombined as Meniscoessus fragilis'
  • 'Selenichnus breviusculus belongs to Selenichnus'
  • 'Selenichnus falcatus belongs to Selenichnus'
  • 'Serpentes belongs to Squamata'
  • 'Seymouria is a subjective synonym of Conodectes'
  • 'Seymouria baylorensis is a subjective synonym of Conodectes favosus'
  • 'Seymouridae is a subjective synonym of Conodectidae'
  • 'Shastasauridae belongs to Ichthyosauria'
  • 'Shastasaurinae belongs to Shastasauridae'
  • 'Shastasaurus belongs to Shastasaurinae'
  • 'Shastasaurus alexandrae belongs to Shastasaurus'
  • 'Shastasaurus altispinus belongs to Shastasaurus'
  • 'Shastasaurus careyi belongs to Shastasaurus'
  • 'Shastasaurus osmonti belongs to Shastasaurus'
  • 'Shastasaurus pacificus belongs to Shastasaurus'
  • 'Shastasaurus perrini is recombined as Delphinosaurus perrini'
  • 'Shepardia palmipes belongs to Shepardia'
  • 'Simoedosauria is a subjective synonym of Champsosauriformes'
  • 'Siphonocetus belongs to Cetotheriidae'
  • 'Siphonocetus clarkianus belongs to Siphonocetus'
  • 'Sirenia was reranked as a order and belongs to Ungulata'
  • 'Sironectes belongs to Mosasaurinae'
  • 'Sironectes anguliferus belongs to Sironectes'
  • 'Spatula belongs to Anatinae'
  • 'Speotyto belongs to Strigidae'
  • 'Sphenacodon belongs to Sphenacodontidae'
  • 'Sphenacodon ferox belongs to Sphenacodon'
  • 'Sphenacodontidae belongs to Sphenacodontiformes'
  • 'Sphenacodontiformes belongs to Sphenacodontomorphi'
  • 'Sphenacodontomorphi belongs to Elpidosauria'
  • 'Sphenodon belongs to Sphenodontidae'
  • 'Sphenodon punctatus is corrected as Sphenodon punctata and belongs to Sphenodon'
  • 'Sphenodontidae belongs to Sphenodontiformes'
  • 'Sphenodontiformes belongs to Rhynchocephalia'
  • 'Spizaetus melanoleucus is recombined as Geranoaetus melanoleucus'
  • 'Squalodon belongs to Squalodontidae'
  • 'Squalodon calvertensis belongs to Squalodon'
  • 'Squalodon crassus belongs to Squalodon'
  • 'Squalodon mento is recombined as Delphinodon mento'
  • 'Squalodon pelagius belongs to Squalodon'
  • 'Squalodon tiedemani belongs to Squalodon'
  • 'Squalodontidae belongs to Odontocete'
  • 'Squamata was reranked as a superorder and belongs to Monotreta'
  • 'Stegoceras is a subjective synonym of Troodon'
  • 'Stegoceras brevis is recombined as Troodon brevis'
  • 'Stegoceras validus is recombined as Troodon validus'
  • 'Stegomosuchidae belongs to Aetosauriformes'
  • 'Stegomosuchus belongs to Stegomosuchidae'
  • 'Stegomus belongs to Aetosauridae'
  • 'Stegomus arcuatus belongs to Stegomus'
  • 'Stegomus longipes is recombined as Stegomosuchus longipes'
  • 'Stegopelta belongs to Scelidosauridae'
  • 'Stegopelta landerensis belongs to Stegopelta'
  • 'Stegosauria is a subjective synonym of Stegosauroidae'
  • 'Stegosauridae belongs to Stegosauroidae'
  • 'Stegosauroidea is corrected as Stegosauroidae and belongs to Orthopoda'
  • 'Stegosaurus belongs to Stegosauridae'
  • 'Stegosaurus affinis belongs to Stegosaurus'
  • 'Stegosaurus armatus belongs to Stegosaurus'
  • 'Stegosaurus duplex belongs to Stegosaurus'
  • 'Stegosaurus longispinus belongs to Stegosaurus'
  • 'Stegosaurus marshi is recombined as Hoplitosaurus marshi'
  • 'Stegosaurus stenops belongs to Stegosaurus'
  • 'Stegosaurus sulcatus belongs to Stegosaurus'
  • 'Stegosaurus ungulatus belongs to Stegosaurus'
  • 'Stenichnus yakiensis belongs to Stenichnus' according to Gilmore 1927
  • 'Stenichnus yakiensis belongs to Stenichnus'
  • 'Stenodactylus is replaced by Sustenodactylus'
  • 'Stenodactylus curvatus is recombined as Sustenodactylus curvatus'
  • 'Stenodelphininae belongs to Delphinidae'
  • 'Stenodelphis belongs to Stenodelphininae'
  • 'Stenodelphis sternbergi belongs to Stenodelphis'
  • 'Stenorhynchus vetus is recombined as Lobodon vetus'
  • 'Stephanosaurus intermedius is recombined as Corythosaurus intermedius'
  • 'Stereocephalus tutus is recombined as Euoplocephalus tutus'
  • 'Sterna belongs to Sterninae'
  • 'Sterna elegans is recombined as Thalasseus elegans'
  • 'Sterna forsteri belongs to Sterna'
  • 'Sterna hirundo belongs to Sterna'
  • 'Sterna nigra is recombined as Chlidonias nigra'
  • 'Sterna philadelphia is recombined as Chroicocephalus philadelphia'
  • 'Sterninae belongs to Laridae'
  • 'Steropoides infelix belongs to Steropoides'
  • 'Strigidae belongs to Strigiformes'
  • 'Strigiformes was reranked as a suborder and belongs to Carinatae'
  • 'Strix asio is recombined as Otus asio'
  • 'Strix bubo is recombined as Bubo bubo'
  • 'Strix cunicularia is recombined as Speotyto cunicularia'
  • 'Strix flammea is recombined as Tyto flammea'
  • 'Strix passerina belongs to Strix' according to Linnaeus 1758
  • 'Strix passerina is recombined as Glaucidium passerinum'
  • 'Strix perlata belongs to Strix' according to Vieillot 1817
  • 'Strix perlata is recombined as Tyto perlata'
  • 'Strix virginiana is recombined as Bubo virginianus'
  • 'Struthiomimus is a subjective synonym of Ornithomimus'
  • 'Sturnella belongs to Icteridae'
  • 'Sturnella neglecta belongs to Sturnella'
  • 'Stylacodon is a subjective synonym of Amblotherium'
  • 'Stylacodon gracilis is recombined as Amblotherium gracilis'
  • 'Stylacodon validus is a subjective synonym of Dryolestes priscus'
  • 'Stylemys belongs to Testudinidae'
  • 'Stylemys calaverensis belongs to Stylemys'
  • 'Stylemys capax belongs to Stylemys'
  • 'Stylemys conspecta belongs to Stylemys'
  • 'Stylemys nebrascensis belongs to Stylemys'
  • 'Stylemys oregonensis belongs to Stylemys'
  • 'Stylodon is replaced by Amblotherium'
  • 'Styracosaurus belongs to Ceratopsidae'
  • 'Styracosaurus albertensis belongs to Styracosaurus'
  • 'Suchoprion belongs to Anchisauridae'
  • 'Suchoprion cyphodon belongs to Suchoprion'
  • 'Suchoprion sulcidens belongs to Suchoprion'
  • 'Sula belongs to Sulidae'
  • 'Sula lompocanus is recombined as Moris lompocana'
  • 'Sula loxostyla is recombined as Moris loxostyla'
  • 'Sula willetti belongs to Sula'
  • 'Sulidae belongs to Suloidae'
  • 'Suloidae belongs to Pelecaniformes'
  • 'Syllomus belongs to Cheloniidae'
  • 'Syllomus crispatus belongs to Syllomus'
  • 'Symmetrodonta belongs to Allotheria'
  • 'Symphyrophus belongs to Camarasauridae'
  • 'Symphyrophus musculosus belongs to Symphyrophus'
  • 'Synthliboramphus belongs to Alcinae'
  • 'Taeniolabis belongs to Polymastodontidae'
  • 'Taeniolabis sulcatus belongs to Taeniolabis'
  • 'Tanaodon agilis is recombined as Tathiodon agilis'
  • 'Tanystropheus willistoni is recombined as Coelophysis willistoni'
  • 'Taphrosaurus belongs to Plesiosauria'
  • 'Taphrosphys belongs to Bothremydidae'
  • 'Taphrosphys dares belongs to Taphrosphys'
  • 'Taphrosphys leslianus belongs to Taphrosphys'
  • 'Taphrosphys longinuchus belongs to Taphrosphys'
  • 'Taphrosphys molops belongs to Taphrosphys'
  • 'Taphrosphys nodosus belongs to Taphrosphys'
  • 'Taphrosphys strenuus belongs to Taphrosphys'
  • 'Tarsodactylus caudatus belongs to Tarsodactylus'
  • 'Tarsodactylus expansus belongs to Tarsodactylus'
  • 'Tarsoplectrus is a subjective synonym of Plectropterna'
  • 'Tathiodon belongs to Paurodontidae'
  • 'Teleodus avus belongs to Teleodus'
  • 'Teleorhinus belongs to Pholidosauridae'
  • 'Teleorhinus browni belongs to Teleorhinus'
  • 'Telmatornis belongs to Rallinae'
  • 'Telmatornis affinis belongs to Telmatornis'
  • 'Telmatornis priscus belongs to Telmatornis'
  • 'Telmatornis rex belongs to Telmatornis'
  • 'Temnotrionyx belongs to Trionychidae'
  • 'Temnotrionyx manducans belongs to Temnotrionyx'
  • 'Teratornis belongs to Teratornithidae'
  • 'Teratornis merriami belongs to Teratornis'
  • 'Teratornithidae belongs to Vulturoidae'
  • 'Terminonaris is a subjective synonym of Teleorhinus'
  • 'Terrapene belongs to Emydidae'
  • 'Terrapene antipex is a subjective synonym of Terrapene canaliculata'
  • 'Terrapene bulverda belongs to Terrapene'
  • 'Terrapene canaliculata belongs to Terrapene'
  • 'Terrapene formosa belongs to Terrapene'
  • 'Terrapene impressa belongs to Terrapene'
  • 'Terrapene innoxia belongs to Terrapene'
  • 'Terrapene longinsulae belongs to Terrapene'
  • 'Terrapene putnami belongs to Terrapene'
  • 'Terrapene singletoni belongs to Terrapene'
  • 'Terrapene whitneyi belongs to Terrapene'
  • 'Testudinata belongs to Astatoglyptica'
  • 'Testudines is a subjective synonym of Testudinata'
  • 'Testudinidae belongs to Emydoidae'
  • 'Testudo belongs to Testudinidae'
  • 'Testudo (Stylemys) niobrarensis is recombined as Testudo niobrarensis'
  • 'Testudo amphithorax belongs to Testudo'
  • 'Testudo annae belongs to Testudo'
  • 'Testudo arenivaga belongs to Testudo'
  • 'Testudo atascosae is recombined as Gopherus atascosae'
  • 'Testudo brevisterna belongs to Testudo'
  • 'Testudo brontops belongs to Testudo'
  • 'Testudo campester belongs to Testudo'
  • 'Testudo caretta is recombined as Caretta caretta'
  • 'Testudo carolina is recombined as Terrapene carolina'
  • 'Testudo concinna is recombined as Pseudemys concinna'
  • 'Testudo coriacea is recombined as Dermochelys coriacea'
  • 'Testudo corsoni is recombined as Hadrianus corsoni'
  • 'Testudo crassiscutata belongs to Testudo'
  • 'Testudo culbratus is corrected as Testudo cultrata and belongs to Testudo'
  • 'Testudo distans belongs to Testudo'
  • 'Testudo duncani is recombined as Chelichnus duncani'
  • 'Testudo edae belongs to Testudo'
  • 'Testudo emiliae belongs to Testudo'
  • 'Testudo equicomes belongs to Testudo'
  • 'Testudo exornata belongs to Testudo'
  • 'Testudo farri belongs to Testudo'
  • 'Testudo floridana is recombined as Pseudemys floridana'
  • 'Testudo francisi belongs to Testudo'
  • 'Testudo geographica is recombined as Graptemys geographica'
  • 'Testudo gilbertii belongs to Testudo'
  • 'Testudo graeca belongs to Testudo'
  • 'Testudo guttata is recombined as Clemmys guttata'
  • 'Testudo hayi belongs to Testudo'
  • 'Testudo hexagonata belongs to Testudo'
  • 'Testudo hollandi belongs to Testudo'
  • 'Testudo impensa belongs to Testudo'
  • 'Testudo incisa belongs to Testudo'
  • 'Testudo insculpta is recombined as Clemmys insculpta'
  • 'Testudo inusitata belongs to Testudo'
  • 'Testudo klettiana belongs to Testudo'
  • 'Testudo laticaudata belongs to Testudo'
  • 'Testudo laticuneus is corrected as Testudo laticunea and belongs to Testudo'
  • 'Testudo ligonius is corrected as Testudo ligonia and belongs to Testudo'
  • 'Testudo luciae belongs to Testudo'
  • 'Testudo mohavense is corrected as Testudo mohavensis and belongs to Testudo'
  • 'Testudo munda belongs to Testudo'
  • 'Testudo mydas is recombined as Chelonia mydas'
  • 'Testudo ocalana belongs to Testudo'
  • 'Testudo osborniana belongs to Testudo'
  • 'Testudo pansa belongs to Testudo'
  • 'Testudo peragrans belongs to Testudo'
  • 'Testudo pertenius is corrected as Testudo pertenuis and belongs to Testudo'
  • 'Testudo picta is recombined as Chrysemys picta'
  • 'Testudo polyphemus is recombined as Gopherus polyphemus'
  • 'Testudo praeextans belongs to Testudo'
  • 'Testudo quadratus belongs to Testudo'
  • 'Testudo scripta is recombined as Trachemys scripta'
  • 'Testudo sellardsi belongs to Testudo'
  • 'Testudo serpentina is recombined as Chelydra serpentina'
  • 'Testudo thomsoni belongs to Testudo'
  • 'Testudo turgida belongs to Testudo'
  • 'Testudo uintensis belongs to Testudo'
  • 'Testudo undabuna belongs to Testudo'
  • 'Testudo undata belongs to Testudo'
  • 'Testudo vaga belongs to Testudo'
  • 'Tetraceratops belongs to Sphenacodontidae'
  • 'Tetraceratops insignis belongs to Tetraceratops'
  • 'Tetrao californicus is recombined as Lophortyx californica'
  • 'Tetrao cupido is recombined as Tympanuchus cupido'
  • 'Tetrao obscurus is recombined as Dendragapus obscurus'
  • 'Tetrao phasianellus is recombined as Pedioecetes phasianellus'
  • 'Tetrao umbellus is recombined as Bonasa umbellus'
  • 'Tetrao urophasianus is recombined as Centrocercus urophasianus'
  • 'Tetrao virginianus is recombined as Colinus virginianus'
  • 'Tetraonidae belongs to Galloidae'
  • 'Thalassemydidae belongs to Thalassemydoidae'
  • 'Thalassemydoidae belongs to Thecophora'
  • 'Thalasseus belongs to Sterninae'
  • 'Thalattosauria is a subjective synonym of Thalattosauromorphi'
  • 'Thalattosauridae belongs to Thalattosauromorphi'
  • 'Thalattosauromorphi belongs to Squamata'
  • 'Thalattosaurus belongs to Thalattosauridae'
  • 'Thalattosaurus alexandrae belongs to Thalattosaurus'
  • 'Thalattosaurus perrini belongs to Thalattosaurus'
  • 'Thalattosaurus shastensis belongs to Thalattosaurus'
  • 'Thamnophis belongs to Colubridae'
  • 'Thamnophis sirtalis belongs to Thamnophis'
  • 'Thecachampsa contusor is recombined as Crocodylus contusor'
  • 'Thecachampsa sericodon is recombined as Crocodylus sericodon'
  • 'Thecachampsa serratus is recombined as Crocodylus serratus'
  • 'Thecachampsa sicaria is recombined as Crocodylus sicarius'
  • 'Thecachampsa squankensis is recombined as Crocodylus squankensis'
  • 'Thecodontosauridae is a subjective synonym of Zanclodontidae'
  • 'Thecodontosaurus belongs to Zanclodontidae'
  • 'Thecodontosaurus gibbidens belongs to Thecodontosaurus'
  • 'Thecophora belongs to Testudinata'
  • 'Thenaropus is a subjective synonym of Chirotherium'
  • 'Thenaropus leptodactylus belongs to Thenaropus'
  • 'Thenaropus macnaughtoni belongs to Thenaropus' according to Matthew 1903
  • 'Thenaropus macnaughtoni belongs to Thenaropus'
  • 'Thenaropus ovoidactylus belongs to Thenaropus'
  • 'Thenaropus pachydactylus belongs to Thenaropus'
  • 'Thenaropus sphaerodactylus belongs to Thenaropus'
  • 'Therapsida was reranked as a order and belongs to Elpidosauria'
  • 'Theretairus belongs to Sphenodontidae'
  • 'Theretairus antiquus belongs to Theretairus'
  • 'Theriodontia is a subjective synonym of Therapsida'
  • 'Theropleura belongs to Ophiacodontidae'
  • 'Theropleura grandis belongs to Theropleura'
  • 'Theropleura obtusidens is recombined as Dimetrodon obtusidens'
  • 'Theropleura retroversa belongs to Theropleura'
  • 'Theropleura triangulata is a subjective synonym of Theropleura retroversa'
  • 'Theropleura uniformis is recombined as Poliosaurus uniformis'
  • 'Theropoda was reranked as a suborder and belongs to Saurischia'
  • 'Thescelosaurus belongs to Hypsilophodontidae'
  • 'Thescelosaurus neglectus belongs to Thescelosaurus'
  • 'Thescelosaurus warreni belongs to Thescelosaurus'
  • 'Thescelus belongs to Baenidae'
  • 'Thescelus insiliens belongs to Thescelus'
  • 'Thescelus rapiens belongs to Thescelus'
  • 'Thespesius belongs to Hadrosaurinae'
  • 'Thespesius edmontoni belongs to Thespesius'
  • 'Thespesius occidentalis belongs to Thespesius'
  • 'Thespesius saskatchewanensis belongs to Thespesius'
  • 'Thinohyus (Bothrolabis) osmonti is recombined as Perchoerus osmonti'
  • 'Thinopus antiquus belongs to Thinopus'
  • 'Thinosaurus is a subjective synonym of Saniwa'
  • 'Thinosaurus agilis is recombined as Saniwa agilis'
  • 'Thinosaurus crassus is recombined as Saniwa crassa'
  • 'Thinosaurus grandis is recombined as Saniwa grandis'
  • 'Thinosaurus leptodus is a subjective synonym of Saniwa ensidens'
  • 'Thinosaurus paucidens is recombined as Saniwa paucidens'
  • 'Thlaeodontidae was reranked as the subfamily Thlaeodontinae and belongs to Didelphidae'
  • 'Thoracosauridae belongs to Gavialiformes'
  • 'Thoracosaurus belongs to Thoracosauridae'
  • 'Thoracosaurus brevispinus belongs to Thoracosaurus'
  • 'Thoracosaurus glyptodon belongs to Thoracosaurus'
  • 'Thoracosaurus grandis is a subjective synonym of Thoracosaurus neocesariensis'
  • 'Thoracosaurus meirsanus belongs to Thoracosaurus'
  • 'Thoracosaurus mullicensis belongs to Thoracosaurus'
  • 'Tichosteus belongs to Coeluridae'
  • 'Tichosteus aequifacies belongs to Tichosteus'
  • 'Tichosteus lucasanus belongs to Tichosteus'
  • 'Tinodon belongs to Tinodontidae'
  • 'Tinodon bellus belongs to Tinodon'
  • 'Tinodon ferox is recombined as Priacodon ferox'
  • 'Tinodon lepidus belongs to Tinodon'
  • 'Tinodon robustus is recombined as Priacodon robustus'
  • 'Tinodontidae belongs to Symmetrodonta'
  • 'Tinosaurus belongs to Chamaelonidae'
  • 'Tinosaurus stenodon belongs to Tinosaurus'
  • 'Titanosaurus montanus is recombined as Atlantosaurus montanus'
  • 'Tomicosaurus belongs to Cotylosauria'
  • 'Tomicosaurus casei belongs to Tomicosaurus'
  • 'Tomistoma americana is recombined as Gavialosuchus americanus'
  • 'Tomistominae was reranked as the family Tomistomidae and belongs to Gavialiformes'
  • 'Tomodon horrificus is recombined as Diplotomodon horrificus'
  • 'Toretocnemus belongs to Shastasaurinae'
  • 'Toretocnemus californicus belongs to Toretocnemus'
  • 'Torosaurus belongs to Ceratopsidae'
  • 'Torosaurus gladius belongs to Torosaurus'
  • 'Torosaurus latus belongs to Torosaurus'
  • 'Totanus belongs to Tringinae'
  • 'Totanus totanus belongs to Totanus'
  • 'Terrapene anguillulata is a subjective synonym of Terrapene eurypygia'
  • 'Toxichnus inaequalis belongs to Toxichnus'
  • 'Toxochelyidae belongs to Emydoidae'
  • 'Toxochelys belongs to Toxochelyidae'
  • 'Toxochelys bauri belongs to Toxochelys'
  • 'Toxochelys brachyrhinus is corrected as Toxochelys brachyrhina and belongs to Toxochelys'
  • 'Toxochelys latiremis belongs to Toxochelys'
  • 'Toxochelys procax belongs to Toxochelys'
  • 'Toxochelys serrifer belongs to Toxochelys'
  • 'Toxochelys stenoporus is corrected as Toxochelys stenopora and belongs to Toxochelys'
  • 'Trachemys belongs to Emydidae'
  • 'Trachemys delicata belongs to Trachemys'
  • 'Trachemys jarmani belongs to Trachemys'
  • 'Trachemys nuchocarinata belongs to Trachemys'
  • 'Trachemys sculpta belongs to Trachemys'
  • 'Trachemys trulla belongs to Trachemys'
  • 'Trachodon belongs to Hadrosaurinae'
  • 'Trachodon (Pteropelyx) altidens is recombined as Trachodon altidens'
  • 'Trachodon (Pteropelyx) marginatus is recombined as Kritosaurus marginatus'
  • 'Trachodon (Pteropelyx) selwyni is recombined as Trachodon selwyni'
  • 'Trachodon longiceps belongs to Trachodon'
  • 'Trachodon mirabilis belongs to Trachodon'
  • 'Trachodontidae is a subjective synonym of Hadrosauridae'
  • 'Trachodontinae is a subjective synonym of Hadrosaurinae'
  • 'Trachyderma is replaced by Heloderma'
  • 'Trachyderma horridum is recombined as Heloderma horridum'
  • 'Tretosphys belongs to Delphininae'
  • 'Tretosphys uraeus is recombined as Priscodelphinus uraeus'
  • 'Tretulias belongs to Cetotheriidae'
  • 'Tretulias buccatus belongs to Tretulias'
  • 'Triaenopus leptodactylus is a subjective synonym of Triaenopus baileyanus'
  • 'Tribelesodontidae belongs to Ornithocephaliformes'
  • 'Triceratops belongs to Ceratopsidae'
  • 'Triceratops brevicornus belongs to Triceratops'
  • 'Triceratops calicornis belongs to Triceratops'
  • 'Triceratops elatus belongs to Triceratops'
  • 'Triceratops flabellatus belongs to Triceratops'
  • 'Triceratops galeus belongs to Triceratops'
  • 'Triceratops ingens belongs to Triceratops'
  • 'Triceratops obtusus belongs to Triceratops'
  • 'Triceratops prorsus belongs to Triceratops'
  • 'Triceratops serratus belongs to Triceratops'
  • 'Triceratops sulcatus belongs to Triceratops'
  • 'Trichasaurus belongs to Caseidae'
  • 'Trichechiformes belongs to Sirenia'
  • 'Trichechus belongs to Trichechidae'
  • 'Trichechus divergens is recombined as Odobenus divergens'
  • 'Trichecidae is corrected as Trichechidae and belongs to Trichechiformes'
  • 'Triconodon belongs to Triconodontinae'
  • 'Triconodon bisulcus is recombined as Trioracodon bisulcus'
  • 'Triconodon ferox is recombined as Trioracodon ferox'
  • 'Triconodon mordax belongs to Triconodon'
  • 'Triconodonta belongs to Allotheria'
  • 'Triconodontidae belongs to Triconodonta'
  • 'Triconodontinae belongs to Triconodontidae'
  • 'Tridentichnus supaiensis belongs to Tridentichnus' according to Gilmore 1927
  • 'Tridentichnus supaiensis belongs to Tridentichnus'
  • 'Tridentipes is a subjective synonym of Steropoides'
  • 'Tridentipes insignis is a subjective synonym of Steropoides loripes'
  • 'Tridentipes uncus is recombined as Steropoides uncus'
  • 'Trihamus elegans belongs to Trihamus'
  • 'Trihamus magnus belongs to Trihamus'
  • 'Trilophosaurus belongs to Procolophonidae'
  • 'Trilophosaurus buettneri belongs to Trilophosaurus'
  • 'Trinacromerum belongs to Polycotylidae'
  • 'Trinacromerum anonymum belongs to Trinacromerum'
  • 'Trinacromerum bentonianum belongs to Trinacromerum'
  • 'Trinacromerum latimanus belongs to Trinacromerum'
  • 'Tringa alpina is recombined as Pelidna alpina'
  • 'Tringa autumnalis belongs to Tringa' according to Hasselqvist 1762
  • 'Tringa autumnalis is recombined as Plegadis autumnalis'
  • 'Tringa himantopus is recombined as Micropalama himantopus'
  • 'Tringa lobata is recombined as Lobipes lobatus'
  • 'Tringinae belongs to Scolopacidae'
  • 'Trionychidae belongs to Trionychoidae'
  • 'Trionychoidae belongs to Thecophora'
  • 'Trionyx buiei is recombined as Amyda buiei'
  • 'Trionyx cariosus is recombined as Amyda cariosa'
  • 'Trionyx cellulosus is recombined as Amyda cellulosa'
  • 'Trionyx concentricus is recombined as Amyda concentrica'
  • 'Trionyx ferox is recombined as Platypeltis ferox'
  • 'Trionyx foveatus is recombined as Aspideretes foveatus'
  • 'Trionyx guttatus is recombined as Aspideretes guttatus'
  • 'Trionyx halophilus is recombined as Amyda halophila'
  • 'Trionyx heteroglyptus is recombined as Platypeltis heteroglypta'
  • 'Trionyx leptomitus is recombined as Plastomenus leptomitus'
  • 'Trionyx leucopotamicus is recombined as Platypeltis leucopotamica'
  • 'Trionyx lima is recombined as Amyda lima'
  • 'Trionyx priscus is recombined as Amyda prisca'
  • 'Trionyx radulus is recombined as Amyda radula'
  • 'Trionyx scutumantiquum is recombined as Amyda scutumantiquum'
  • 'Trionyx thomasii is recombined as Plastomenus thomasii'
  • 'Trionyx uintaensis is recombined as Amyda uintaensis'
  • 'Trionyx vagans is recombined as Aspideretes vagans'
  • 'Trionyx ventricosus is recombined as Amyda ventricosa'
  • 'Trionyx virginianus is recombined as Amyda virginiana'
  • 'Trioracodon belongs to Triconodontinae'
  • 'Tripriodon is a subjective synonym of Meniscoessus'
  • 'Tripriodon caperatus is recombined as Meniscoessus caperatus'
  • 'Tripriodon coelatus is recombined as Meniscoessus coelatus'
  • 'Trispondylus is replaced by Trichasaurus'
  • 'Trispondylus texensis is recombined as Trichasaurus texensis'
  • 'Troodon belongs to Troodontidae'
  • 'Troodon formosus belongs to Troodon'
  • 'Troodontidae belongs to Iguanodontoidae'
  • 'Tylosaurinae belongs to Mosasauridae'
  • 'Tylosaurus belongs to Tylosaurinae'
  • 'Tylosaurus rapax belongs to Tylosaurus'
  • 'Tylosteus belongs to Ankylosauridae'
  • 'Tylosteus ornatus belongs to Tylosteus'
  • 'Tympanuchus belongs to Tetraonidae'
  • 'Tympanuchus lulli belongs to Tympanuchus'
  • 'Typopus gracilis belongs to Typopus'
  • 'Typothorax belongs to Aetosauridae'
  • 'Typothorax coccinarum belongs to Typothorax'
  • 'Tyrannosaurinae belongs to Deinodontidae'
  • 'Tyrannosaurus belongs to Tyrannosaurinae'
  • 'Tyrannosaurus rex belongs to Tyrannosaurus'
  • 'Tyto belongs to Tytonidae'
  • 'Tytonidae belongs to Strigiformes'
  • 'Uintasaurus belongs to Camarasauridae'
  • 'Uintasaurus douglassi belongs to Uintasaurus'
  • 'Uintornis belongs to Picidae'
  • 'Uintornis lucaris belongs to Uintornis'
  • 'Ulias belongs to Cetotheriidae'
  • 'Ulias moratus belongs to Ulias'
  • 'Ungulata was reranked as a superorder and belongs to Monodelphia'
  • 'Uria belongs to Alcinae'
  • 'Uronautes belongs to Plesiosauria'
  • 'Uronautes cetiformis belongs to Uronautes'
  • 'Urubitinga belongs to Buteoninae'
  • 'Urubitinga enecta belongs to Urubitinga'
  • 'Varanidae belongs to Anguioidae'
  • 'Varanoops belongs to Poliosauridae'
  • 'Varanosaurus belongs to Poliosauridae'
  • 'Varanosaurus acutirostris belongs to Varanosaurus'
  • 'Varanosaurus brevirostris is recombined as Varanoops brevirostris'
  • 'Vultur belongs to Vulturidae'
  • 'Vultur aura is recombined as Cathartes aura'
  • 'Vultur californianus is recombined as Gymnogyps californianus'
  • 'Vultur gryphus belongs to Vultur'
  • 'Vultur urubu is recombined as Coragyps urubu'
  • 'Vulturidae belongs to Vulturoidae'
  • 'Vulturoidae belongs to Falconiformes'
  • 'Wetmoregyps belongs to Buteoninae'
  • 'Winfieldia belongs to Ophiacodontidae'
  • 'Winfieldia hilli belongs to Winfieldia'
  • 'Xanthocephalus belongs to Icteridae'
  • 'Xema belongs to Larinae'
  • 'Xenochelys belongs to Dermatemydidae'
  • 'Xenochelys formosa belongs to Xenochelys'
  • 'Xenorophus belongs to Agorophiidae'
  • 'Xenorophus sloanii belongs to Xenorophus'
  • 'Xerobates orthopygius is recombined as Testudo orthopygia'
  • 'Xestops belongs to Anguidae'
  • 'Xestops pawneensis belongs to Xestops'
  • 'Xiphopeza triplex belongs to Xiphopeza'
  • 'Yalavis belongs to Aves'
  • 'Yalavis tenuipes belongs to Yalavis'
  • 'Zalophus belongs to Otariidae'
  • 'Zamenis acuminatus is recombined as Coluber acuminatus'
  • 'Zanclodontidae belongs to Zanclodontoidae'
  • 'Zanclodontoidae belongs to Theropoda'
  • 'Zapsalis belongs to Dromaeosaurinae'
  • 'Zapsalis abradens belongs to Zapsalis'
  • 'Zarhachis belongs to Platanistinae'
  • 'Zarhachis flagellator belongs to Zarhachis'
  • 'Zarhachis tysonii belongs to Zarhachis'
  • 'Zarhachis velox belongs to Zarhachis'
  • 'Zatomus belongs to Phytosauridae'
  • 'Zatomus sarcophagus belongs to Zatomus'
  • 'Zenaida is corrected as Zenaidura and belongs to Columbidae'
  • 'Zeuglodon is a subjective synonym of Basilosaurus'
  • 'Zeuglodon brachyspondylus is recombined as Basilosaurus brachyspondylus'
  • 'Zeuglodon brachyspondylus minor is recombined as Zygorhiza minor'
  • 'Zeuglodon cetoides is recombined as Basilosaurus cetoides'
  • 'Zeuglodon pygmaeus is recombined as Agorophius pygmaeus'
  • 'Zeuglodontes [misspelled as Zeuglodontes] belongs to Cete'
  • 'Ziphiidae was reranked as the tribe Ziphiina and belongs to Odontocete'
  • 'Ziphiinae belongs to Ziphiidae'
  • 'Ziphius longirostris is recombined as Mesoplodon longirostris'
  • 'Ziphius planirostris is recombined as Choneziphius planirostris'
  • 'Zygoramma belongs to Dermatemydidae'
  • 'Zygoramma microglypha belongs to Zygoramma'
  • 'Zygoramma striatula belongs to Zygoramma'
  • 'Zygorhiza belongs to Dorudontidae'