Opinions from E. L. Trouessart 1898
- 'Agabelus belongs to Platanistinae'
- 'Agabelus porcatus belongs to Agabelus'
- 'Agnotherium is a subjective synonym of Squalodon'
- 'Agorophius belongs to Balaenopterinae'
- 'Ailurina was reranked as the subfamily Ailurinae and belongs to Ursidae'
- 'Alachtherium is a subjective synonym of Trichechus'
- 'Alachtherium cretsii is a subjective synonym of Trichechus rosmarus'
- 'Amphicetus belongs to Balaenopterinae'
- 'Amphicetus editus belongs to Amphicetus'
- 'Amphicetus later belongs to Amphicetus'
- 'Amphicetus rotundus belongs to Amphicetus'
- 'Amphicetus verus belongs to Amphicetus'
- 'Anoplonassa belongs to Halicoridae'
- 'Anoplonassa forcipata belongs to Anoplonassa'
- 'Antaodon belongs to Manatidae'
- 'Antaodon cinctus belongs to Antaodon' according to Ameghino 1886
- 'Antaodon cinctus belongs to Antaodon'
- 'Aporotus belongs to Ziphiinae'
- 'Aporotus affinis belongs to Aporotus'
- 'Aporotus dicyrtus belongs to Aporotus'
- 'Aporotus recurvirostris belongs to Aporotus'
- 'Archaeoceti belongs to Zeuglodonta'
- 'Archaeocetus is a subjective synonym of Pristinocetus'
- 'Arctocephalus belongs to Otariidae'
- 'Arctocephalus (Arctocephalus) belongs to Arctocephalus'
- 'Arctocephalus forsteri is recombined as Arctocephalus (Arctocephalus) forsteri'
- 'Arctocephalus gazella is recombined as Arctocephalus (Arctocephalus) gazella'
- 'Arctocephalus gracilis belongs to Arctocephalus' according to Nehring 1887
- 'Arctocephalus gracilis is recombined as Arctocephalus (Arctocephalus) gracilis'
- 'Arctocephalus hookeri is recombined as Eumetopias (Phocarctos) hookeri'
- 'Arctocephalus lobatus is recombined as Eumetopias (Zalophus) lobatus'
- 'Arctocephalus williamsi is a subjective synonym of Eumetopias (Zalophus) lobatus'
- 'Arctophoca is a subjective synonym of Arctocephalus'
- 'Argyrocetinae belongs to Platanistidae'
- 'Argyrocetus patagonicus belongs to Argyrocetus'
- 'Argyrodelphis belongs to Platanistinae'
- 'Arionius is a subjective synonym of Squalodon'
- 'Arionius servatus is recombined as Squalodon servatus'
- 'Aulocetus belongs to Balaenopterinae'
- 'Balaena belongs to Balaeninae'
- 'Balaena affinis belongs to Balaena'
- 'Balaena arcuata belongs to Balaena'
- 'Balaena arcuata belongs to Balaena' according to Boitard 1842
- 'Balaena balaenopsis belongs to Balaena'
- 'Balaena balsami belongs to Balaena'
- 'Plesiocetus cortesii is a subjective synonym of Plesiocetus cuvieri'
- 'Balaena cuvierii is recombined as Plesiocetus cuvieri'
- 'Balaena definata is recombined as Balaenoptera definita'
- 'Balaena emarginata is recombined as Balaenoptera emarginata'
- 'Balaena etrusca belongs to Balaena'
- 'Balaena lamanoni is a subjective synonym of Balaena biscayensis'
- 'Balaena lartetii [misspelled as Balaena larteti] belongs to Balaena'
- 'Balaena lartetii is corrected as Balaena larteti and belongs to Balaena' according to P. J. Van Beneden 1882
- 'Balaena macrocephalus belongs to Balaena'
- 'Balaena molassica is recombined as Aulocetus molassicus'
- 'Balaena mysticetoides is recombined as Cetotherium mysticetoides'
- 'Balaena palaeatlantica is recombined as Rhegnopsis palaeatlantica'
- 'Balaena pampaea belongs to Balaena'
- 'Balaena primigenius [misspelled as Balaena primigenia] belongs to Balaena'
- 'Balaena prisca is recombined as Siphonocetus priscus'
- 'Balaena simpsoni belongs to Balaena'
- 'Balaeninae belongs to Balaenidae'
- 'Balaenodon is a subjective synonym of Hoplocetus'
- 'Stenodon lentianus is a subjective synonym of Squalodon ehrlichii'
- 'Balaenodon physaloides is recombined as Hoplocetus physaloides'
- 'Balaenoptera belongs to Balaenopterinae'
- 'Balaenoptera juddi belongs to Balaenoptera'
- 'Balaenoptera musculoides belongs to Balaenoptera'
- 'Balaenoptera pusilla is replaced by Cetotherium parvum'
- 'Balaenoptera robusta is recombined as Plesiocetus robustus'
- 'Balaenoptera sursiplana belongs to Balaenoptera'
- 'Balaenopterinae belongs to Balaenidae'
- 'Balaenotus insignis is recombined as Balaena insignis'
- 'Balaenotus lawley is recombined as Balaena lawleyi'
- 'Balaenotus meneghinii is recombined as Balaena meneghinii'
- 'Basilosaurus is a subjective synonym of Zeuglodon'
- 'Belemnoziphius compressus is recombined as Mesoplodon compressus'
- 'Belemnoziphius prorops is recombined as Mesoplodon prorops'
- 'Belemnoziphius recurvus is recombined as Mesoplodon recurvus'
- 'Belosphys is a subjective synonym of Ixacanthus'
- 'Berardiopsis belongs to Ziphiinae'
- 'Berardiopsis pliocaenus belongs to Berardiopsis'
- 'Burtinopsis is a subjective synonym of Megaptera'
- 'Burtinopsis minutus is recombined as Megaptera minutus'
- 'Burtinopsis similis is recombined as Megaptera similis'
- 'Callocephalus is a subjective synonym of Phoca'
- 'Callophoca was reranked as Phoca (Callophoca) and belongs to Phoca'
- 'Callophoca obscura is recombined as Phoca (Callophoca) obscura'
- 'Callorhinus was reranked as Arctocephalus (Callorhinus) and belongs to Arctocephalus'
- 'Callotaria is a subjective synonym of Callorhinus'
- 'Catodon is a subjective synonym of Physeter'
- 'Catodon vetus is an objective synonym of Physeter antiquus'
- 'Cephalotropis belongs to Balaenopterinae'
- 'Cephalotropis coronatus belongs to Cephalotropis'
- 'Cetophis heteroclitus belongs to Cetophis'
- 'Cetotheriomorphus is a subjective synonym of Cetotherium'
- 'Cetotherium belongs to Balaenopterinae'
- 'Cetotherium (Cetotheriophanes) capellinii is recombined as Plesiocetus capellinii'
- 'Cetotherium ambiguum belongs to Cetotherium'
- 'Cetotherium brevifrons is recombined as Heterocetus brevifrons'
- 'Cetotherium crassangulum is a subjective synonym of Cetotherium leptocentrum'
- 'Cetotherium dubium is recombined as Plesiocetus dubius'
- 'Cetotherium gastaldii is recombined as Balaenoptera gastaldii'
- 'Cetotherium helmersenii belongs to Cetotherium'
- 'Cetotherium incertum belongs to Cetotherium'
- 'Cetotherium klinderi belongs to Cetotherium'
- 'Cetotherium mayeri [misspelled as Cetotherium meyeri] belongs to Cetotherium'
- 'Cetotherium megalophysum belongs to Cetotherium'
- 'Cetotherium moreni belongs to Cetotherium'
- 'Cetotherium parvum belongs to Cetotherium'
- 'Cetotherium pusillum belongs to Cetotherium'
- 'Cetotherium rathkii is corrected as Cetotherium rathkei and belongs to Cetotherium'
- 'Cetotherium vandelli is recombined as Plesiocetus vandellii'
- 'Champsodelphis belongs to Platanistinae'
- 'Champsodelphis acutus belongs to Champsodelphis'
- 'Champsodelphis carniolicus belongs to Champsodelphis'
- 'Champsodelphis cristatus belongs to Champsodelphis'
- 'Champsodelphis denticulatus belongs to Champsodelphis'
- 'Champsodelphis dubius belongs to Champsodelphis'
- 'Champsodelphis italicus belongs to Champsodelphis'
- 'Champsodelphis karreri belongs to Champsodelphis'
- 'Champsodelphis letochae belongs to Champsodelphis'
- 'Champsodelphis longirostris is a subjective synonym of Champsodelphis renovi'
- 'Champsodelphis longirostris belongs to Champsodelphis' according to Keferst 1834
- 'Champsodelphis macrognathus is a subjective synonym of Champsodelphis macrogenius'
- 'Champsodelphis scaldensis belongs to Champsodelphis'
- 'Champsodelphis valenciennesii is a subjective synonym of Champsodelphis macrogenius'
- 'Chirotherium is a subjective synonym of Halitherium'
- 'Halianassa brochii is a subjective synonym of Felsinotherium subappeninum'
- 'Cheirotherium subapenninum is recombined as Felsinotherium subappeninum'
- 'Choneziphius belongs to Ziphiidae'
- 'Choneziphius liops belongs to Choneziphius'
- 'Choneziphius packardi belongs to Choneziphius'
- 'Choneziphius trachops belongs to Choneziphius'
- 'Chronozoon belongs to Halicoridae'
- 'Cingulata was reranked as a suborder and belongs to Xenarthra'
- 'Clymene normalis is recombined as Prodelphinus normalis'
- 'Clymene punctata is a subjective synonym of Prodelphinus malayanus'
- 'Colophonodon holmesii is recombined as Squalodon holmesii'
- 'Crassitherium belongs to Halicoridae'
- 'Crassitherium robustum belongs to Crassitherium'
- 'Crenidelphinus is a subjective synonym of Squalodon'
- 'Cynodictis gracilis is recombined as Cynotherium gracilis'
- 'Cynodictis leptorhynchus is recombined as Cynotherium leptorhynchum'
- 'Cynodon aymardi is recombined as Cyotherium aymardi'
- 'Cynorca proterva is recombined as Squalodon protervus'
- 'Cystophora belongs to Cystophorinae'
- 'Cystophorina is corrected as Cystophorinae and belongs to Phocidae'
- 'Dasypus unicinctus is recombined as Lysiurus unicinctus'
- 'Hemisyntrachelus is a subjective synonym of Tursiops'
- 'Pachypleurus is replaced by Pristinocetus'
- 'Delphinapterus (Pachypleurus) fockii is recombined as Pristinocetus fockii'
- 'Delphinapterus (Pachypleurus) nordmanni is recombined as Pristinocetus nordmanni'
- 'Delphinapterus gabbii is recombined as Priscodelphinus gabbii'
- 'Delphinapterus lacertosus is recombined as Priscodelphinus lacertosus'
- 'Delphinapterus orcinus belongs to Delphinapterus'
- 'Delphinapterus ruschenbergeri is recombined as Priscodelphinus ruschenbergeri'
- 'Delphinidae belongs to Odontoceti'
- 'Delphinodon belongs to Platanistinae'
- 'Delphinoides is a subjective synonym of Squalodon'
- 'Delphinopsis belongs to Platanistinae'
- 'Delphinopsis freyeri belongs to Delphinopsis'
- 'Delphinus belongs to Delphinidae'
- 'Globicephalus orcoides is a subjective synonym of Globicephalus uncidens'
- 'Delphinus (Phocaena) uncidens is recombined as Globicephalus uncidens'
- 'Delphinus (Steno) lentiginosus is recombined as Sotalia lentiginosus'
- 'Delphinus (Steno) lentiginosus belongs to Delphinus (Steno)' according to R. Owen 1866
- 'Delphinus abusalam belongs to Delphinus' according to Ruppell 1842
- 'Delphinus abusalam is a subjective synonym of Tursiops aduncus'
- 'Delphinus aduncus is recombined as Tursiops aduncus'
- 'Delphinus aduncus belongs to Delphinus' according to Ehrenberg 1832
- 'Delphinus bairdii is a subjective synonym of Delphinus delphis'
- 'Delphinus bairdii belongs to Delphinus' according to Dall 1873
- 'Delphinus bessarabicus is recombined as Champsodelphis bessarabicus'
- 'Delphinus blainvillei is recombined as Stenodelphis blainvillei'
- 'Squalodon bordae is a subjective synonym of Squalodon grateloupii'
- 'Steno bredanensis is a subjective synonym of Steno frontatus'
- 'Delphinus brevidens is a subjective synonym of Squalodon bariensis'
- 'Delphinus brevimanus is a subjective synonym of Prodelphinus malayanus'
- 'Delphinus brocchi is recombined as Tursiops brocchii'
- 'Delphinus brocchi is recombined as Tursiops brocchii' according to del Prato 1898
- 'Delphinus calvertensis is recombined as Lophocetus calvertensis'
- 'Delphinus canaliculatus is recombined as Schizodelphis canaliculatus'
- 'Delphinus compressus is a subjective synonym of Steno frontatus'
- 'Delphinus conradi is recombined as Ixacanthus conradi'
- 'Delphinus cortesii is recombined as Delphinapterus cortesii'
- 'Delphinus dationum is recombined as Champsodelphis dationum'
- 'Delphinus delphis belongs to Delphinus'
- 'Sotalia fluviatilis is a subjective synonym of Sotalia tucuxi'
- 'Delphinus fluvofasciatus is a subjective synonym of Delphinus delphis'
- 'Delphinus fluvofasciatus belongs to Delphinus' according to Wagner 1853
- 'Delphinus forsteri is a subjective synonym of Delphinus delphis'
- 'Delphinus frontatus is recombined as Steno frontatus'
- 'Delphinus gangeticus is recombined as Platanista gangetica'
- 'Delphinus geoffrensis is recombined as Inia geoffrensis'
- 'Delphinus giulii is a subjective synonym of Delphinus delphis'
- 'Delphinus guianensis is recombined as Sotalia guianensis'
- 'Delphinus guianensis is recombined as Sotalia guianensis' according to P. J. Van Beneden 1863
- 'Delphinus hamatus is a subjective synonym of Tursiops aduncus'
- 'Delphinus hamatus belongs to Delphinus' according to Wiegmann 1841
- 'Delphinus janira is a subjective synonym of Delphinus delphis'
- 'Delphinus karsteni is recombined as Globicephalus karsteni'
- 'Delphinus lophogenius is recombined as Champsodelphis lophogenius'
- 'Delphinus macrogenius belongs to Delphinus' according to Laurillard 1846
- 'Delphinus macrogenius is recombined as Champsodelphis macrogenius'
- 'Delphinus major is a subjective synonym of Delphinus delphis'
- 'Squalodon molassicus is a subjective synonym of Squalodon servatus'
- 'Delphinus moorei is a subjective synonym of Delphinus delphis'
- 'Delphinus occiduus belongs to Delphinus'
- 'Pontoporia paranensis is a subjective synonym of Pontistes rectifrons'
- 'Delphinus planiceps is a subjective synonym of Steno frontatus'
- 'Delphinus planus is recombined as Schizodelphis planus'
- 'Delphinus pliocaenus is a subjective synonym of Delphinus delphis'
- 'Delphinus plumbeus is recombined as Sotalia plumbeus'
- 'Delphinus pomeegra is a subjective synonym of Delphinus delphis'
- 'Delphinus pomeegra belongs to Delphinus' according to R. Owen 1866
- 'Delphinus pseudodelphis is a subjective synonym of Prodelphinus malayanus'
- 'Delphinus pseudodelphis belongs to Delphinus' according to Gervais 1840
- 'Delphinus pseudodelphis is a subjective synonym of Schizodelphis sulcatus'
- 'Delphinus rectifrons is recombined as Pontistes rectifrons'
- 'Delphinus reinwardtii is a subjective synonym of Steno frontatus'
- 'Delphinus renovi is recombined as Champsodelphis renovi'
- 'Delphinus restitutensis belongs to Delphinus'
- 'Delphinus rostratus is a subjective synonym of Platanista gangetica'
- 'Steno rostratus is a subjective synonym of Steno frontatus'
- 'Delphinus shawensis is a subjective synonym of Platanista gangetica'
- 'Delphinus sinensis is recombined as Sotalia sinensis' according to W. H. Flower 1870
- 'Delphinus sinensis is recombined as Sotalia sinensis'
- 'Delphinus stenorhynchus is a subjective synonym of Champsodelphis renovi'
- 'Delphinus sulcatus is recombined as Schizodelphis sulcatus'
- 'Delphinus tetragorhinus is recombined as Champsodelphis tetragorhinus'
- 'Delphinus velox is a subjective synonym of Prodelphinus malayanus'
- 'Delphinus vermontana is recombined as Delphinapterus vermontana'
- 'Desmostylus belongs to Halicoridae'
- 'Desmostylus hesperus belongs to Desmostylus'
- 'Diaphorocetus belongs to Physeterinae'
- 'Dinoziphius is a subjective synonym of Eucetus'
- 'Hoplocetus carolinensis is a nomen nudum'
- 'Dinoziphius roemdorkii is a subjective synonym of Eucetus amblyodon'
- 'Diochotichus is a subjective synonym of Argyrodelphis'
- 'Dioplodon becanii is recombined as Mesoplodon becanii'
- 'Dioplodon bononiensis is recombined as Mesoplodon bononiensis'
- 'Dioplodon danconae is recombined as Mesoplodon danconai'
- 'Dioplodon farnesinae is recombined as Mesoplodon farnesinae'
- 'Dioplodon hemixem belongs to Dioplodon' according to Van Beneden 1860
- 'Dioplodon hemixem is recombined as Ziphirostrum hemixemii'
- 'Dioplodon lawley is recombined as Mesoplodon lawleyi'
- 'Dioplodon meneghinii is recombined as Mesoplodon meneghinii'
- 'Dioplodon senensis is recombined as Mesoplodon senensis'
- 'Dioplotherium belongs to Halicoridae'
- 'Dioplotherium manigaulti belongs to Dioplotherium'
- 'Dorudon is a subjective synonym of Zeuglodon'
- 'Dorudon serratus is recombined as Zeuglodon serratus'
- 'Eboroziphius coelops is recombined as Choneziphius coelops'
- 'Eotherium belongs to Halicoridae'
- 'Eotherium aegyptiacum belongs to Eotherium'
- 'Erignathus was reranked as Phoca (Erignathus) and belongs to Phoca'
- 'Eschrichtius cephalus is recombined as Cetotherium cephalus'
- 'Eschrichtius leptocentrus is recombined as Cetotherium leptocentrum'
- 'Eschrichtius polyporus is recombined as Cetotherium polyporus'
- 'Eucetus belongs to Physeterinae'
- 'Eucetus amblyodon belongs to Eucetus'
- 'Eudelphinus is a subjective synonym of Delphinus'
- 'Eudelphis mortezelensis is recombined as Delphinus mortezelensis'
- 'Eudelphis mortezelensis is recombined as Delphinus mortezelensis' according to du Bus 1872
- 'Eumetopias belongs to Otariidae'
- 'Eumetopias (Eumetopias) belongs to Eumetopias'
- 'Euotaria is a subjective synonym of Arctocephalus'
- 'Eurhinodelphis belongs to Platanistinae'
- 'Eurhinodelphis ambiguus belongs to Eurhinodelphis'
- 'Eurhinodelphis cocheteuxi belongs to Eurhinodelphis'
- 'Eurhinodelphis longirostris belongs to Eurhinodelphis'
- 'Eurhinodelphis sassariensis belongs to Eurhinodelphis'
- 'Felsinotherium belongs to Manatidae'
- 'Felsinotherium forestii belongs to Felsinotherium'
- 'Fucotherium is a subjective synonym of Halitherium'
- 'Globicephala [misspelled as Globicephalus] belongs to Delphinidae'
- 'Glyphidelphis is a subjective synonym of Steno'
- 'Graphiodon is a subjective synonym of Squalodon'
- 'Graphiodon vinearis is recombined as Squalodon vinearius'
- 'Gryphoca was reranked as Halichoerus (Gryphoca) and belongs to Halichoerus'
- 'Gryphoca similis is recombined as Halichoerus (Gryphoca) similis'
- 'Gypsophoca is a subjective synonym of Arctocephalus'
- 'Halarctus is a subjective synonym of Arctocephalus'
- 'Halianassa is a subjective synonym of Halitherium'
- 'Halianassa collinii is a subjective synonym of Halitherium schinzi'
- 'Halichoerus belongs to Phocinae'
- 'Halichoerus (Halichoerus) belongs to Halichoerus'
- 'Halicore belongs to Halicoridae'
- 'Halicore australis belongs to Halicore'
- 'Halitherium cuvieri is a subjective synonym of Halitherium schinzi'
- 'Halicore tabernaculi belongs to Halicore'
- 'Halicoridae belongs to Sirenia'
- 'Halicyon is a subjective synonym of Phoca'
- 'Haliphilus is a subjective synonym of Phoca'
- 'Halitherium belongs to Halicoridae'
- 'Halitherium bellunense is recombined as Metaxytherium bellunense'
- 'Halitherium serresii is recombined as Metaxytherium serresii'
- 'Halitherium veronense is recombined as Prorastomus veronensis'
- 'Hemicaulodon belongs to Halicoridae'
- 'Hemicaulodon effodiens belongs to Hemicaulodon'
- 'Herpetocetus belongs to Balaenopterinae'
- 'Herpetocetus scaldiensis belongs to Herpetocetus'
- 'Heterocetus belongs to Balaenopterinae'
- 'Heterocetus affinis belongs to Heterocetus'
- 'Heterocetus guiscardii belongs to Heterocetus'
- 'Heterocetus sprangii belongs to Heterocetus'
- 'Heterodelphis belongs to Platanistinae'
- 'Heterodelphis klinderi belongs to Heterodelphis'
- 'Hippopotamus dubius is a subjective synonym of Halitherium schinzi'
- 'Hippopotamus medius is a subjective synonym of Metaxytherium cordieri'
- 'Histriophoca was reranked as Phoca (Histriophoca) and belongs to Phoca'
- 'Homaeocetus [misspelled as Homocetus] belongs to Physeterinae'
- 'Homocetus villersii belongs to Homocetus'
- 'Hoplocetus belongs to Physeterinae'
- 'Hoplocetus borgerhoutensis belongs to Hoplocetus'
- 'Hoplocetus curvidens is a subjective synonym of Hoplocetus crassidens'
- 'Hoplocetus minor belongs to Hoplocetus'
- 'Hoplocetus obesus belongs to Hoplocetus'
- 'Hydrarchus is a subjective synonym of Zeuglodon'
- 'Hydrodamalis is a subjective synonym of Rhytina'
- 'Hyperoodon belongs to Ziphiinae'
- 'Hyperoodon burmeisteri belongs to Hyperoodon' according to Moreno 1888
- 'Hyperoodon burmeisteri belongs to Hyperoodon'
- 'Hypocetus is a subjective synonym of Diaphorocetus'
- 'Idiocetus belongs to Balaenopterinae'
- 'Idiocetus guicciardinii belongs to Idiocetus'
- 'Idiocetus longifrons belongs to Idiocetus'
- 'Inia belongs to Platanistinae'
- 'Inia amazonica belongs to Inia' according to Spix and Martins 1823
- 'Inia amazonica is a subjective synonym of Inia geoffrensis'
- 'Inia boliviensis is a subjective synonym of Inia geoffrensis'
- 'Iniopsis belongs to Platanistinae'
- 'Iniopsis caucasica belongs to Iniopsis'
- 'Ischyrorhynchus belongs to Platanistinae'
- 'Ischyrorhynchus vanbenedeni belongs to Ischyrorhynchus'
- 'Isocetus belongs to Balaenopterinae'
- 'Isocetus depauwii [misspelled as Isocetus depauxi] belongs to Isocetus'
- 'Ixacanthus belongs to Platanistinae'
- 'Ixacanthus coelospondylus belongs to Ixacanthus'
- 'Kekenodon belongs to Zeuglodontidae'
- 'Kekenodon onamata belongs to Kekenodon'
- 'Leptonychotes was reranked as Ogmorhinus (Leptonychotes) and belongs to Ogmorhinus'
- 'Leptonyx is replaced by Leptonychotes'
- 'Lobodon was reranked as Ogmorhinus (Lobodon) and belongs to Ogmorhinus'
- 'Lophocetus belongs to Platanistinae'
- 'Macrochirifer belongs to Platanistinae'
- 'Macrochirifer vindobonensis belongs to Macrochirifer'
- 'Macrophoca atlantica is recombined as Squalodon atlanticus'
- 'Macrorhinus belongs to Cystophorinae'
- 'Manatherium belongs to Manatidae'
- 'Manatherium delheidi belongs to Manatherium'
- 'Manati gigas is recombined as Rhytina gigas'
- 'Manatidae belongs to Sirenia'
- 'Manatus belongs to Manatidae'
- 'Manatus antiquus is corrected as Manatus antiquus and belongs to Manatus'
- 'Manatus coulombi is recombined as Eotherium coulombi'
- 'Manatus giganteus belongs to Manatus'
- 'Halitherium guettardi is a subjective synonym of Halitherium schinzi'
- 'Manatus inornatus belongs to Manatus'
- 'Manatus inunguis belongs to Manatus'
- 'Manatus senegalensis belongs to Manatus'
- 'Manatus studeri is recombined as Metaxytherium studeri'
- 'Meganeuron is a subjective synonym of Physeter'
- 'Megaptera belongs to Balaenopterinae'
- 'Megaptera affinis belongs to Megaptera'
- 'Megaptera burmeisteri belongs to Megaptera'
- 'Megaptera expansa is recombined as Siphonocetus expansus'
- 'Megapteropsis robusta is recombined as Megaptera robusta'
- 'Mesoceti is a subjective synonym of Squalodontidae'
- 'Mesocetus belongs to Balaenopterinae'
- 'Mesocetus is a subjective synonym of Diaphorocetus'
- 'Mesocetus agrami belongs to Mesocetus'
- 'Mesocetus aquitanicus belongs to Mesocetus'
- 'Mesocetus latifrons belongs to Mesocetus'
- 'Mesocetus laxatus is recombined as Idiocetus laxatus'
- 'Mesocetus longirostris belongs to Mesocetus'
- 'Mesocetus pinguis belongs to Mesocetus'
- 'Mesocetus poucheti is recombined as Diaphorocetus poucheti'
- 'Mesocetus siphunculus belongs to Mesocetus'
- 'Mesoplodon belongs to Ziphiinae'
- 'Mesoplodon floweri belongs to Mesoplodon' according to Lydekker 1887
- 'Mesoplodon floweri is corrected as Mesoplodon floris and belongs to Mesoplodon'
- 'Mesoplodon scaphoides belongs to Mesoplodon'
- 'Mesotaria belongs to Cystophorinae'
- 'Mesotaria ambigua belongs to Mesotaria'
- 'Mesoteras belongs to Balaenopterinae'
- 'Mesoteras kerrianus belongs to Mesoteras'
- 'Metaxytherium belongs to Halicoridae'
- 'Metaxytherium beaumonti is a subjective synonym of Metaxytherium cordieri'
- 'Metaxytherium cordieri belongs to Metaxytherium'
- 'Metaxytherium krahuletzi belongs to Metaxytherium'
- 'Metaxytherium lovisati belongs to Metaxytherium'
- 'Metopocetus belongs to Balaenopterinae'
- 'Metopocetus durinasus belongs to Metopocetus'
- 'Miosiren belongs to Halicoridae'
- 'Miosiren kocki [misspelled as Miosiren kockii] belongs to Miosiren'
- 'Mirounga is a subjective synonym of Macrorhinus'
- 'Mirounga angustirostris is recombined as Macrorhinus angustirostris'
- 'Monachinae belongs to Phocidae'
- 'Monachus belongs to Monachinae'
- 'Monotherium [misspelled as Monatherium] belongs to Monachinae'
- 'Monotherium aberratum is recombined as Monatherium aberratum'
- 'Monotherium affine is recombined as Monatherium affine'
- 'Monotherium delognii is recombined as Monatherium delognii'
- 'Notiocetus belongs to Balaeninae'
- 'Notiocetus platensis belongs to Notiocetus'
- 'Notiocetus romerianus belongs to Notiocetus'
- 'Notocetus is a subjective synonym of Argyrodelphis'
- 'Odobenotherium is a subjective synonym of Trichechus'
- 'Odobenotherium lartetianus is a subjective synonym of Trichechus rosmarus'
- 'Odobenus is a subjective synonym of Trichechus'
- 'Odontobaenus is a subjective synonym of Trichechus'
- 'Odontoceti belongs to Cetacea'
- 'Ogmorhinus belongs to Monachinae'
- 'Ogmorhinus belongs to Monachinae'
- 'Ommatophoca belongs to Monachinae'
- 'Ommatophoca rossii is corrected as Ommatophoca rossi and belongs to Ommatophoca'
- 'Ontocetus is a subjective synonym of Hoplocetus'
- 'Ontocetus emmonsi is recombined as Hoplocetus emmonsi'
- 'Orca citoniensis belongs to Orca'
- 'Orca gladiator belongs to Orca'
- 'Orca gladiator belongs to Orca' according to Bonnaterre 1789
- 'Orycterocetus is a subjective synonym of Physeter'
- 'Orycterocetus cornutidens is recombined as Physeter cornutidens'
- 'Orycterocetus quadratidens is recombined as Physeter quadratidens'
- 'Otaria belongs to Otariidae'
- 'Otaria australis is recombined as Arctocephalus australis'
- 'Otaria byroni is a subjective synonym of Otaria jubata'
- 'Otaria californiana is recombined as Eumetopias (Zalophus) californianus'
- 'Otaria fischeri is recombined as Arctocephalus (Arctocephalus) fischeri'
- 'Otaria flavescens belongs to Otaria' according to Shaw 1800
- 'Otaria flavescens is a subjective synonym of Otaria jubata'
- 'Otaria leclercii is recombined as Mesotaria leclercii'
- 'Otaria oudriana is recombined as Mesotaria oudriana'
- 'Otariina was reranked as the family Otariidae and belongs to Pinnipedia'
- 'Pachyacanthus is a subjective synonym of Priscodelphinus'
- 'Pachyacanthus suessii is recombined as Priscodelphinus suessii'
- 'Pachyacanthus trachyspondylus is a subjective synonym of Priscodelphinus suessii'
- 'Pachycetus belongs to Balaenopterinae'
- 'Pachycetus humilis belongs to Pachycetus'
- 'Pachycetus robustus belongs to Pachycetus'
- 'Pachyodon is a subjective synonym of Squalodon'
- 'Pagomys is a subjective synonym of Pusa'
- 'Pagophilus was reranked as Phoca (Pagophilus) and belongs to Phoca'
- 'Palaeobalaena is a subjective synonym of Balaena'
- 'Palaeocetus belongs to Balaeninae'
- 'Palaeocetus sedgwicki belongs to Palaeocetus'
- 'Palaeodelphis is a subjective synonym of Physodon'
- 'Palaeodelphis annulatus is recombined as Physodon annulatus'
- 'Palaeodelphis arcuatus is recombined as Physodon arcuatus'
- 'Palaeodelphis coronatus is recombined as Physodon coronatus'
- 'Palaeodelphis fusiformis is recombined as Physodon fusiformis'
- 'Palaeodelphis grandis is recombined as Physodon grandis'
- 'Palaeodelphis minutus is recombined as Physodon minutus'
- 'Palaeodelphis pachyodon is recombined as Physodon pachyodon'
- 'Palaeodelphis zonatus is recombined as Physodon zonatus'
- 'Palaeopontoporia is a subjective synonym of Pontistes'
- 'Palaeophoca is a subjective synonym of Pristiphoca'
- 'Palaeophoca nystii is a subjective synonym of Pristiphoca occitana'
- 'Paracetus is a subjective synonym of Diaphorocetus'
- 'Paracetus mediatlanticus is recombined as Diaphorocetus mediatlanticus'
- 'Pelycorhamphus belongs to Ziphiinae'
- 'Pelycorhamphus pertortus belongs to Pelycorhamphus'
- 'Phoca belongs to Phocinae'
- 'Phoca (Phoca) belongs to Phoca'
- 'Phoca albiventer is recombined as Monachus (Monachus) albiventer'
- 'Phoca ambigua is recombined as Squalodon ambiguus'
- 'Phoca antarctica is recombined as Arctocephalus (Arctocephalus) antarcticus'
- 'Phoca barbata is recombined as Phoca (Erignathus) barbatus'
- 'Phoca carcinophaga is recombined as Ogmorhinus (Lobodon) carcinophaga'
- 'Phoca caspica is recombined as Phoca (Phoca) caspica'
- 'Phoca cristata is recombined as Cystophora cristata'
- 'Phoca fasciata is recombined as Phoca (Histriophoca) fasciata'
- 'Phoca foetida is recombined as Phoca (Phoca) foetida'
- 'Phoca gaudini is recombined as Monachus (Pristiphoca) gaudini'
- 'Phoca groenlandica is recombined as Phoca (Pagophilus) groenlandica'
- 'Phoca grypus is recombined as Halichoerus (Halichoerus) grypus'
- 'Phoca jubata is recombined as Otaria jubata'
- 'Phoca leonina is recombined as Macrorhinus leoninus'
- 'Phoca leptonyx is recombined as Ogmorhinus (Ogmorhinus) leptonyx'
- 'Phoca maeotica is recombined as Monatherium maeoticum'
- 'Phoca melitensis is a subjective synonym of Squalodon scillae'
- 'Phoca moori is recombined as Phoca (Phoca) moori'
- 'Phoca occitana is recombined as Monachus (Pristiphoca) occitana'
- 'Phoca pedroni is a subjective synonym of Monachus (Pristiphoca) occitana'
- 'Phoca pontica is recombined as Phoca (Phoca) pontica'
- 'Phoca rosmarus is recombined as Trichechus rosmarus'
- 'Phoca rugidens is recombined as Monachus (Pristiphoca) rugidens'
- 'Phoca rugosidens is recombined as Monatherium rugosidens'
- 'Phoca stelleri is recombined as Eumetopias (Eumetopias) stelleri'
- 'Phoca tropicalis is recombined as Monachus (Monachus) tropicalis'
- 'Phoca ursina is recombined as Arctocephalus (Callorhinus) ursinus'
- 'Phoca vitulina is recombined as Phoca (Phoca) vitulina'
- 'Phoca vitulina sibirica is recombined as Phoca (Phoca) sibirica'
- 'Phoca vitulinoides is recombined as Phoca (Phoca) vitulinoides'
- 'Phocadae is corrected as Phocidae and belongs to Pinnipedia'
- 'Phocaena communis belongs to Phocaena' according to Cuvier 1817
- 'Phocaena communis belongs to Phocaena'
- 'Phocaena euxinica is recombined as Champsodelphis euxinicus'
- 'Phocaenopsis cornutus belongs to Phocaenopsis'
- 'Phocaenopsis mantelli belongs to Phocaenopsis'
- 'Phocaenopsis scheynensis belongs to Phocaenopsis'
- 'Phocageneus venustus is recombined as Delphinodon venustus'
- 'Phocanella was reranked as Phoca (Phocanella) and belongs to Phoca'
- 'Phocanella minor is recombined as Phoca (Phocanella) minor'
- 'Phocanella pumila is recombined as Phoca (Phocanella) pumila'
- 'Phocarctos was reranked as Eumetopias (Phocarctos) and belongs to Eumetopias'
- 'Phocinae belongs to Phocidae'
- 'Phococetus belongs to Squalodontidae'
- 'Phocodon is a subjective synonym of Squalodon'
- 'Phocodon scillae is recombined as Squalodon scillae'
- 'Phocoena compressicauda belongs to Phocoena' according to Lesson 1828
- 'Phocoena compressicauda is recombined as Tursiops compressicauda'
- 'Physalus is a subjective synonym of Physeter'
- 'Physeter belongs to Physeterinae'
- 'Physeter antiquus belongs to Physeter'
- 'Physeterula belongs to Physeterinae'
- 'Physeterula dubusii belongs to Physeterula'
- 'Physetodon is a subjective synonym of Physeter'
- 'Physodon belongs to Physeterinae'
- 'Physodon leccense belongs to Physodon'
- 'Physodon patagonicus belongs to Physodon'
- 'Physotherium belongs to Physeterinae'
- 'Pinnipedia belongs to Mammalia'
- 'Placoziphius belongs to Ziphiinae'
- 'Placoziphius duboisii belongs to Placoziphius'
- 'Platanista belongs to Platanistinae'
- 'Platanista croatica belongs to Platanista'
- 'Platanista indi is a subjective synonym of Platanista gangetica'
- 'Platanistina was reranked as the family Platanistidae and belongs to Odontoceti'
- 'Platanistinae belongs to Platanistidae'
- 'Platydelphis is a subjective synonym of Schizodelphis'
- 'Platyphoca was reranked as Phoca (Platyphoca) and belongs to Phoca'
- 'Platyphoca vulgaris is recombined as Phoca (Platyphoca) vulgaris'
- 'Platyrhynchus is a subjective synonym of Schizodelphis'
- 'Platyrhynchus is a subjective synonym of Otaria'
- 'Plesiocetus belongs to Balaenopterinae'
- 'Plesiocetus becanii is a subjective synonym of Plesiocetus gervaisii'
- 'Plesiocetus brialmonti belongs to Plesiocetus'
- 'Plesiocetus burtinii belongs to Plesiocetus'
- 'Plesiocetus garopii belongs to Plesiocetus'
- 'Plesiocetus gervaisii belongs to Plesiocetus'
- 'Plesiocetus hupschii belongs to Plesiocetus'
- 'Plesiocetus portisi is a subjective synonym of Plesiocetus cuvieri'
- 'Poecilophoca is a subjective synonym of Leptonychotes'
- 'Pontistes belongs to Platanistidae'
- 'Pontivaga fischeri belongs to Pontivaga'
- 'Pontobasileus belongs to Zeuglodontidae'
- 'Pontobasileus tuberculatus belongs to Pontobasileus'
- 'Pontoplanodes belongs to Platanistinae'
- 'Pontoplanodes obliquus belongs to Pontoplanodes'
- 'Pontoporia is a subjective synonym of Stenodelphis'
- 'Pontoporia tenuirostris is recombined as Stenodelphis tenuirostris'
- 'Pontotherium is a subjective synonym of Felsinotherium'
- 'Priscodelphinus belongs to Platanistinae'
- 'Priscodelphinus acutidens is recombined as Champsodelphis acutidens'
- 'Priscodelphinus atropius is recombined as Ixacanthus atropius'
- 'Priscodelphinus crassus belongs to Priscodelphinus'
- 'Priscodelphinus cristatus belongs to Priscodelphinus'
- 'Priscodelphinus declivus belongs to Priscodelphinus'
- 'Priscodelphinus elegans belongs to Priscodelphinus'
- 'Priscodelphinus grandaevus belongs to Priscodelphinus'
- 'Priscodelphinus harlani is a subjective synonym of Priscodelphinus grandaevus'
- 'Priscodelphinus productus belongs to Priscodelphinus'
- 'Priscodelphinus pulvinatus belongs to Priscodelphinus'
- 'Priscodelphinus robustus belongs to Priscodelphinus'
- 'Priscodelphinus spinosus is recombined as Ixacanthus spinosus'
- 'Priscodelphinus squalodontoides belongs to Priscodelphinus'
- 'Priscodelphinus stenus is recombined as Ixacanthus stenus'
- 'Priscodelphinus teres belongs to Priscodelphinus'
- 'Priscodelphinus validus belongs to Priscodelphinus'
- 'Priscophyseter belongs to Physeterinae'
- 'Priscophyseter typus belongs to Priscophyseter'
- 'Pristinocetus belongs to Balaenidae'
- 'Pristiphoca was reranked as Monachus (Pristiphoca) and belongs to Monachus'
- 'Probalaena dubusii is recombined as Balaena dubusi'
- 'Prohalicore belongs to Halicoridae'
- 'Prohalicore dubaleni belongs to Prohalicore'
- 'Prophoca belongs to Phocinae'
- 'Prophoca proxima belongs to Prophoca'
- 'Prophoca rousseaui belongs to Prophoca'
- 'Prorastomidae belongs to Sirenia'
- 'Prorastomus belongs to Prorastomidae'
- 'Prorastomus sirenoides belongs to Prorastomus'
- 'Proroziphius chonops is recombined as Choneziphius chonops'
- 'Proroziphius macrops is recombined as Choneziphius macrops'
- 'Prosqualodon belongs to Squalodontidae'
- 'Prosqualodon australis belongs to Prosqualodon'
- 'Protobalaena is a subjective synonym of Balaena'
- 'Protobalaena is a subjective synonym of Rhegnopsis'
- 'Proroziphius is a subjective synonym of Choneziphius'
- 'Pugmeodon is a subjective synonym of Halitherium'
- 'Pugmeodon schinzii is recombined as Halitherium schinzi'
- 'Pusa was reranked as Phoca (Pusa) and belongs to Phoca'
- 'Rhabdosteus belongs to Platanistinae'
- 'Rhabdosteus latiradix belongs to Rhabdosteus'
- 'Rhegnopsis belongs to Balaenopterinae'
- 'Rhinostodes antwerpiensis is recombined as Mesoplodon antwerpiensis'
- 'Rhizoprion is a subjective synonym of Squalodon'
- 'Rhizoprion bariensis is recombined as Squalodon bariensis'
- 'Rhytina belongs to Halicoridae'
- 'Rhytiodus capgrandi belongs to Rhytiodus'
- 'Ribodon belongs to Manatidae'
- 'Ribodon limbatus belongs to Ribodon'
- 'Rosmarus is a subjective synonym of Trichechus'
- 'Rytiodus is corrected as Rhytiodus and belongs to Halicoridae'
- 'Sastrilophus dehmi is a nomen dubium'
- 'Saurocetes is a subjective synonym of Pontoplanodes'
- 'Saurocetes argentinus is recombined as Pontoplanodes argentinus'
- 'Saurocetus is a subjective synonym of Zeuglodon'
- 'Saurocetus gibbesii is recombined as Zeuglodon gibbesii'
- 'Saurodelphis is a subjective synonym of Pontoplanodes'
- 'Scaldicetus belongs to Physeterinae'
- 'Scaldicetus antwerpiensis belongs to Scaldicetus'
- 'Scaldicetus caretti belongs to Scaldicetus'
- 'Schizodelphis belongs to Platanistinae'
- 'Schizodelphis compressus belongs to Schizodelphis'
- 'Schizodelphis depereti belongs to Schizodelphis'
- 'Schizodelphis elongatus belongs to Schizodelphis'
- 'Siphonocetus belongs to Balaenopterinae'
- 'Siphonocetus clarkianus belongs to Siphonocetus'
- 'Sirenia was reranked as a order and belongs to Mammalia'
- 'Smilocamptus is a subjective synonym of Squalodon'
- 'Smilocomptus bourgueti is a subjective synonym of Squalodon bariensis'
- 'Sotalia brasiliensis belongs to Sotalia'
- 'Sotalia brasiliensis belongs to Sotalia' according to P. J. Van Beneden 1875
- 'Sotalia gadumu belongs to Sotalia' according to R. Owen 1866
- 'Sotalia gadumu is a subjective synonym of Sotalia perniger'
- 'Sotalia maculiventer belongs to Sotalia'
- 'Sotalia maculiventer belongs to Sotalia' according to R. Owen 1866
- 'Sotalia pallidus is a subjective synonym of Sotalia tucuxi'
- 'Sotalia pallidus belongs to Sotalia' according to Gervais 1855
- 'Sotalia perniger belongs to Sotalia'
- 'Sotalia santonicus belongs to Sotalia'
- 'Sotalia santonicus belongs to Sotalia' according to Lesson 1841
- 'Sotalia teuszii belongs to Sotalia'
- 'Sotalia teuszii belongs to Sotalia' according to Kukenthal 1892
- 'Sotalia tucuxi belongs to Sotalia' according to J. E. Gray 1856
- 'Sotalia tucuxi belongs to Sotalia'
- 'Squalodon belongs to Squalodontidae'
- 'Squalodon antverpiensis belongs to Squalodon'
- 'Squalodon ehrlichii belongs to Squalodon'
- 'Squalodon gastaldii belongs to Squalodon'
- 'Squalodon gervaisii belongs to Squalodon'
- 'Squalodon grateloupii belongs to Squalodon'
- 'Squalodon hypsispondylus belongs to Squalodon'
- 'Squalodon incertus belongs to Squalodon'
- 'Squalodon mento is recombined as Delphinodon mento'
- 'Squalodon meyeri is a subjective synonym of Squalodon servatus'
- 'Squalodon pelagius belongs to Squalodon'
- 'Squalodon serratus belongs to Squalodon'
- 'Squalodon suessii belongs to Squalodon'
- 'Squalodon tiedemani [misspelled as Squalodon tiedmanni] belongs to Squalodon'
- 'Squalodon vocontiorum belongs to Squalodon'
- 'Squalodon wilkinsoni belongs to Squalodon'
- 'Squalodon wymanii is recombined as Delphinodon wymanii'
- 'Squalodon zitteli belongs to Squalodon'
- 'Squalodontidae belongs to Odontoceti'
- 'Stellerus is a subjective synonym of Rhytina'
- 'Stemmatopus is a subjective synonym of Cystophora'
- 'Steno belongs to Delphinidae'
- 'Steno attenuatus is a subjective synonym of Prodelphinus malayanus'
- 'Steno bellardii belongs to Steno'
- 'Steno capensis is a subjective synonym of Prodelphinus malayanus'
- 'Steno gastaldii belongs to Steno'
- 'Steno pernettyi belongs to Steno' according to Demarest 1822
- 'Steno pernettyi is a subjective synonym of Steno frontatus'
- 'Steno perspicillatus belongs to Steno'
- 'Stenodelphis belongs to Platanistinae'
- 'Stenodon is a subjective synonym of Physeter'
- 'Stenorhynchus is a subjective synonym of Ogmorhinus'
- 'Lobodon vetus is a subjective synonym of Ogmorhinus (Lobodon) carcinophaga'
- 'Stereodelphis is a subjective synonym of Squalodon'
- 'Stylodon is replaced by Odontostylus'
- 'Trachytherium is a subjective synonym of Halitherium'
- 'Trachytherium raulinii is a subjective synonym of Halitherium schinzi'
- 'Tretosphys is a subjective synonym of Priscodelphinus'
- 'Tretosphys uraeus is recombined as Priscodelphinus uraeus'
- 'Tretulias belongs to Balaenopterinae'
- 'Tretulias buccatus belongs to Tretulias'
- 'Trichechidae [misspelled as Trichecidae] belongs to Pinnipedia'
- 'Trichechus belongs to Trichecidae'
- 'Trichechus dugon is recombined as Halicore dugung'
- 'Trichechus obesus belongs to Trichechus'
- 'Trichecodon is a subjective synonym of Trichechus'
- 'Trichecodon huxleyi is recombined as Trichechus huxleyi'
- 'Trichecodon koninckii is recombined as Trichechus koninckii'
- 'Trirhizodon is a subjective synonym of Squalodon'
- 'Tursiops truncatus is a subjective synonym of Tursiops tursio'
- 'Tursiops belongs to Delphinidae'
- 'Tursiops catalania belongs to Tursiops' according to J. E. Gray 1862
- 'Tursiops catalania belongs to Tursiops'
- 'Tursiops coerulescens belongs to Tursiops' according to Giglioli 1889
- 'Tursiops coerulescens is a subjective synonym of Tursiops tursio'
- 'Tursiops communis is a subjective synonym of Tursiops tursio'
- 'Tursiops communis belongs to Tursiops' according to Fitzing 1846
- 'Tursiops astensis is a subjective synonym of Tursiops cortesii'
- 'Tursiops cymodoce is a subjective synonym of Tursiops tursio'
- 'Tursiops erebennus belongs to Tursiops' according to E. D. Cope 1865
- 'Tursiops erebennus is a subjective synonym of Tursiops tursio'
- 'Tursiops eurynome is a subjective synonym of Tursiops tursio'
- 'Tursiops gillii belongs to Tursiops'
- 'Tursiops metis is a subjective synonym of Tursiops tursio'
- 'Tursiops miocaenus belongs to Tursiops'
- 'Tursiops parvimanus belongs to Tursiops'
- 'Tursiops tursio belongs to Tursiops' according to Bonnaterre 1789
- 'Ulias belongs to Balaenopterinae'
- 'Ulias moratus belongs to Ulias'
- 'Uranocetus belongs to Platanistinae'
- 'Zalophus belongs to Otariidae'
- 'Zarhachis belongs to Platanistinae'
- 'Zarhachis flagellator belongs to Zarhachis'
- 'Zarhachis tysonii belongs to Zarhachis'
- 'Zarhachis velox belongs to Zarhachis'
- 'Zeuglodon belongs to Zeuglodontidae'
- 'Zeuglodon brachyspondylus belongs to Zeuglodon'
- 'Zeuglodon caucasicus belongs to Zeuglodon'
- 'Zeuglodon harwoodii is corrected as Zeuglodon harwoodi and belongs to Zeuglodon'
- 'Zeuglodon hydrarchus belongs to Zeuglodon'
- 'Zeuglodon macrospondylus belongs to Zeuglodon'
- 'Zeuglodon osiris belongs to Zeuglodon'
- 'Zeuglodon paulsonii belongs to Zeuglodon'
- 'Zeuglodon puschii belongs to Zeuglodon'
- 'Zeuglodon pygmaeus is recombined as Agorophius pygmaeus'
- 'Zeuglodon vasconum is recombined as Phococetus vasconum'
- 'Zeuglodon vredense [misspelled as Zeuglodon vredensis] belongs to Zeuglodon'
- 'Zeuglodon wanklyni belongs to Zeuglodon'
- 'Zeuglodonta belongs to Cetacea'
- 'Zeuglodontidae belongs to Zeuglodonta'
- 'Ziphiidae was reranked as the tribe Ziphiina and belongs to Physeteridae'
- 'Ziphila lugubris is recombined as Lysiurus lugubris'
- 'Ziphioides belongs to Ziphiinae'
- 'Ziphioides obliquus belongs to Ziphioides'
- 'Ziphioides triangulus belongs to Ziphioides'
- 'Ziphiopsis belongs to Ziphiinae'
- 'Ziphiopsis phymatodes belongs to Ziphiopsis'
- 'Ziphiopsis servatus belongs to Ziphiopsis'
- 'Ziphirostrum belongs to Ziphiinae'
- 'Ziphirostrum gracile belongs to Ziphirostrum'
- 'Ziphirostrum laevigatum belongs to Ziphirostrum'
- 'Ziphirostrum marginatum belongs to Ziphirostrum'
- 'Ziphirostrum tumidum belongs to Ziphirostrum'
- 'Ziphirostrum turninense belongs to Ziphirostrum'
- 'Ziphius belongs to Ziphiinae'
- 'Ziphius angulatus is recombined as Mesoplodon angulatus'
- 'Ziphius angustus is recombined as Mesoplodon angustus'
- 'Ziphius blasii is recombined as Mesoplodon blasii'
- 'Ziphius gibbus is recombined as Mesoplodon gibbus'
- 'Ziphius longirostris is recombined as Mesoplodon longirostris'
- 'Ziphius medilineatus is recombined as Mesoplodon medilineatus'
- 'Ziphius planirostris is recombined as Choneziphius planirostris'
- 'Ziphius planus is recombined as Choneziphius planus'
- 'Ziphius priscus is recombined as Cetotherium priscum'
- 'Ziphius priscus is recombined as Cetotherium priscum' according to J. F. Brandt 1842
- 'Ziphius tenuirostris is recombined as Mesoplodon tenuirostris'
- 'Zygodon is a subjective synonym of Zeuglodon'