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'