Opinions from W. Turner 1912
- 'Agaphelus glaucus is recombined as Rachianectes glaucus'
- 'Arctocephalus belongs to Otariidae'
- 'Arctocephalus gazella belongs to Arctocephalus'
- 'Arctocephalus hookeri is recombined as Eumetopias hookeri'
- 'Balaena belongs to Balaenidae'
- 'Balaena australis belongs to Balaena'
- 'Balaena biscayensis belongs to Balaena'
- 'Balaena boops is recombined as Megaptera boops'
- 'Balaena marginata is recombined as Neobalaena marginata'
- 'Balaena musculus is recombined as Balaenoptera musculus'
- 'Balaena mysticetus belongs to Balaena'
- 'Balaena rostrata is recombined as Balaenoptera rostrata'
- 'Balaenoptera belongs to Balaenopteridae'
- 'Balaenoptera borealis belongs to Balaenoptera'
- 'Balaenopteridae belongs to Mystacoceti'
- 'Balanadae is corrected as Balaenidae and belongs to Mystacoceti'
- 'Berardius belongs to Ziphiinae'
- 'Cephalorhynchus belongs to Delphinidae'
- 'Cephalorhynchus albifrons belongs to Cephalorhynchus'
- 'Cystophora belongs to Cystophorinae'
- 'Cystophorina is corrected as Cystophorinae and belongs to Phocidae'
- 'Delphinapterus belongs to Delphinidae'
- 'Delphinidae belongs to Odontoceti'
- 'Delphinus belongs to Delphinidae'
- 'Delphinus (Grampus) was reranked as Grampus and belongs to Delphinidae'
- 'Delphinus (Grampus) acutus is recombined as Lagenorhynchus acutus'
- 'Delphinus albirostris is recombined as Lagenorhynchus albirostris'
- 'Delphinus blainvillei is recombined as Pontoporia blainvilli'
- 'Delphinus delphis belongs to Delphinus'
- 'Delphinus gangeticus is recombined as Platanista gangetica'
- 'Delphinus geoffrensis is recombined as Inia geoffrensis'
- 'Delphinus griseus is recombined as Grampus griseus'
- 'Delphinus leucas is recombined as Delphinapterus leucas'
- 'Delphinus melas is recombined as Globicephalus melas'
- 'Delphinus phocaenoides is recombined as Neomeris phocaenoides'
- 'Delphinus rostratus is recombined as Steno rostratus'
- 'Eumetopias belongs to Otariidae'
- 'Globicephala [misspelled as Globicephalus] belongs to Delphinidae'
- 'Globicephalus macrorhynchus belongs to Globicephalus'
- 'Halichoerus belongs to Phocinae'
- 'Halicore belongs to Halicoridae'
- 'Halicoridae belongs to Sirenia'
- 'Hyperoodon belongs to Ziphiinae'
- 'Hyperoodon rostratum is corrected as Hyperoodon rostratus and belongs to Hyperoodon'
- 'Inia belongs to Platanistidae'
- 'Kogia belongs to Physeterinae'
- 'Lagenorhynchus belongs to Delphinidae'
- 'Leptonychotes belongs to Ogmorhininae'
- 'Macrorhinus belongs to Cystophorinae'
- 'Manatidae belongs to Sirenia'
- 'Manatus belongs to Manatidae'
- 'Manatus senegalensis belongs to Manatus'
- 'Megaptera belongs to Balaenopteridae'
- 'Mesoplodon belongs to Ziphiinae'
- 'Monachus belongs to Ogmorhininae'
- 'Monodon belongs to Delphinidae'
- 'Monodon monoceros belongs to Monodon'
- 'Mystacoceti belongs to Cetacea'
- 'Neobalaena belongs to Balaenidae'
- 'Neomeris belongs to Delphinidae'
- 'Odontoceti belongs to Cetacea'
- 'Ogmorhininae belongs to Phocidae'
- 'Ogmorhinus belongs to Ogmorhininae'
- 'Ommatophoca belongs to Ogmorhininae'
- 'Ommatophoca rossii belongs to Ommatophoca'
- 'Orca belongs to Delphinidae'
- 'Orca (Feresa) was reranked as Feresa and belongs to Delphinidae'
- 'Orca (Orcaella) brevirostris is recombined as Orcella brevirostris'
- 'Orca gladiator belongs to Orca'
- 'Orcella belongs to Delphinidae'
- 'Otaria belongs to Otariidae'
- 'Otaria (Arctophoca) philippii [misspelled as Arctocephalus philippi] belongs to Arctocephalus'
- 'Otaria californiana is recombined as Eumetopias californianus'
- 'Otaria cinerea is recombined as Eumetopias cinerea'
- 'Otaria weddellii is recombined as Leptonychotes weddelli'
- 'Otariina was reranked as the family Otariidae and belongs to Pinnipedia'
- 'Phoca belongs to Phocinae'
- 'Phoca albiventer is recombined as Monachus albiventer'
- 'Phoca australis is recombined as Arctocephalus australis'
- 'Phoca barbata belongs to Phoca'
- 'Phoca carcinophaga is recombined as Ogmorhinus carcinophaga'
- 'Phoca cristata is recombined as Cystophora cristata'
- 'Phoca groenlandica belongs to Phoca'
- 'Phoca grypus is recombined as Halichoerus grypus'
- 'Phoca hispida belongs to Phoca'
- 'Phoca jubata is recombined as Otaria jubata'
- 'Phoca leonina is recombined as Macrorhinus leoninus'
- 'Phoca leptonyx is recombined as Ogmorhinus leptonyx'
- 'Phoca pusilla belongs to Phoca' according to Schreber 1778
- 'Phoca pusilla is recombined as Arctocephalus pusillus'
- 'Phoca rosmarus is recombined as Trichechus rosmarus'
- 'Phoca stelleri is recombined as Eumetopias stelleri'
- 'Phoca ursina is recombined as Arctocephalus ursinus'
- 'Phoca vitulina belongs to Phoca'
- 'Phocadae is corrected as Phocidae and belongs to Pinnipedia'
- 'Phocaena belongs to Delphinidae'
- 'Phocaena communis belongs to Phocaena'
- 'Phocaena crassidens is recombined as Pseudorca crassidens'
- 'Phocinae belongs to Phocidae'
- 'Physalus sibbaldii is recombined as Balaenoptera sibbaldi'
- 'Physeter belongs to Physeterinae'
- 'Physeter bidens is recombined as Mesoplodon bidens'
- 'Physeter macrocephalus belongs to Physeter'
- 'Physeteridae belongs to Odontoceti'
- 'Physeterinae belongs to Physeteridae'
- 'Platanista belongs to Platanistidae'
- 'Platanistina was reranked as the family Platanistidae and belongs to Odontoceti'
- 'Pontoporia belongs to Platanistidae'
- 'Prodelphinus belongs to Delphinidae'
- 'Pseudorca belongs to Delphinidae'
- 'Rhachianectes is corrected as Rachianectes and belongs to Balaenidae'
- 'Rhytina belongs to Rhytinidae'
- 'Rhytina stellerus [misspelled as Rhytina stelleri] belongs to Rhytina'
- 'Rhytinidae belongs to Sirenia'
- 'Sotalia belongs to Delphinidae'
- 'Steno belongs to Delphinidae'
- 'Trichechus belongs to Trichecidae'
- 'Trichechus dugon is recombined as Halicore dugong'
- 'Trichecidae [misspelled as Trichecidae] belongs to Pinnipedia'
- 'Tursiops belongs to Delphinidae'
- 'Tursiops catalania belongs to Tursiops'
- 'Tursiops tursio belongs to Tursiops'
- 'Ziphiinae belongs to Physeteridae'
- 'Ziphius belongs to Ziphiinae'
- 'Ziphius cavirostris belongs to Ziphius'
- 'Ziphius layardii is recombined as Mesoplodon layardi'
- 'Ziphius medilineatus belongs to Ziphius'