Opinions from T. S. Palmer 1904
- 'Acrodelphis belongs to Platanistidae'
- 'Acrodelphis krahuletzi belongs to Acrodelphis'
- 'Agaphelus belongs to Balaenidae'
- 'Agorophius belongs to Squalodontidae'
- 'Agouti belongs to Dasyproctidae'
- 'Alachtherium belongs to Odobenidae'
- 'Alachtherium crestsii is corrected as Alachtherium cretsii and belongs to Alachtherium'
- 'Amphicetus belongs to Balaenidae'
- 'Amphicetus editus belongs to Amphicetus'
- 'Amphicetus later belongs to Amphicetus'
- 'Amphicetus rotundus belongs to Amphicetus'
- 'Amphicetus verus belongs to Amphicetus'
- 'Ananarcus is a subjective synonym of Anarnak'
- 'Anarcus is a subjective synonym of Anarnak'
- 'Anarnak belongs to Physeteridae'
- 'Anarnak groenlandicus belongs to Anarnak'
- 'Anoplonassa belongs to Physeteridae'
- 'Anoplonassa forcipata belongs to Anoplonassa'
- 'Archaeocetus belongs to Delphinidae'
- 'Arctocephalus belongs to Otariidae'
- 'Argocetus belongs to Delphinidae'
- 'Argyrocetus belongs to Platanistidae'
- 'Argyrocetus patagonicus belongs to Argyrocetus'
- 'Argyrodelphis belongs to Platanistidae'
- 'Artibeus belongs to Phyllostomatidae'
- 'Atherurus belongs to Hystricidae'
- 'Aulocetus belongs to Balaenidae'
- 'Balaena belongs to Balaenidae'
- 'Balaenodon belongs to Physeteridae'
- 'Balaenoptera belongs to Balaenidae'
- 'Balaenotus belongs to Balaenidae'
- 'Balaenula belongs to Balaenidae'
- 'Basilosaurus belongs to Basilosauridae'
- 'Bassaricyon belongs to Procyonidae'
- 'Belosphys belongs to Platanistidae'
- 'Beluga belongs to Delphinidae'
- 'Benedenia belongs to Balaenidae'
- 'Berardiopsis belongs to Physeteridae'
- 'Berardius belongs to Physeteridae'
- 'Boselaphus derbianus belongs to Boselaphus' according to Gray 1847
- 'Boselaphus derbianus is recombined as Taurotragus derbianus'
- 'Brachyphylla belongs to Phyllostomatidae'
- 'Burtinopsis belongs to Balaenidae'
- 'Callophoca belongs to Phocidae'
- 'Callorhinus belongs to Otariidae'
- 'Callorhynchus belongs to Otariidae'
- 'Callotaria belongs to Otariidae'
- 'Caperea belongs to Balaenidae'
- 'Catodon belongs to Physeteridae'
- 'Cebuella belongs to Callitrichidae'
- 'Cetodiodon belongs to Physeteridae'
- 'Cetophis belongs to Platanistidae'
- 'Cetotheriomorphus belongs to Balaenidae'
- 'Cetotheriopsis belongs to Balaenidae'
- 'Cetotherium (Cetotheriophanes) belongs to Cetotherium'
- 'Cetotherium (Eucetotherium) belongs to Cetotherium'
- 'Cetotherium (Plesiocetopsis) belongs to Cetotherium'
- 'Champsodelphis belongs to Platanistidae'
- 'Champsodelphis cristatus is recombined as Acrodelphis cristatus'
- 'Champsodelphis denticulatus is recombined as Acrodelphis denticulatus'
- 'Champsodelphis fuchsii is recombined as Acrodelphis fuchsii'
- 'Champsodelphis karreri is recombined as Acrodelphis karreri'
- 'Champsodelphis letochae is recombined as Acrodelphis letochae'
- 'Champsodelphis macrognathus is recombined as Acrodelphis macrognathus'
- 'Champsodelphis ombonii is recombined as Acrodelphis ombonii'
- 'Champsodelphis scaldensis is recombined as Acrodelphis scaldensis'
- 'Chimarrogale belongs to Soricidae'
- 'Chiropodomys belongs to Muridae'
- 'Chrotopterus belongs to Phyllostomatidae'
- 'Colophonodon belongs to Squalodontidae'
- 'Crenidelphinus belongs to Squalodontidae'
- 'Cyrtodelphis belongs to Platanistidae'
- 'Cystophora belongs to Phocidae'
- 'Dactylomys belongs to Octodontidae'
- 'Delphinapterus belongs to Delphinidae'
- 'Pachypleurus is replaced by Archaeocetus'
- 'Delphinapterus (Pachypleurus) fockii belongs to Delphinapterus (Pachypleurus)'
- 'Delphinapterus (Pachypleurus) nordmanni belongs to Delphinapterus (Pachypleurus)'
- 'Delphinodon belongs to Platanistidae'
- 'Delphinoides belongs to Squalodontidae'
- 'Delphinopsis belongs to Platanistidae'
- 'Delphinus belongs to Delphinidae'
- 'Delphinus (Delphinorhynchus) was reranked as Delphinorhynchus and belongs to Physeteridae'
- 'Delphinus (Grampus) was reranked as Grampus and belongs to Delphinidae'
- 'Delphinus delphis is recombined as Eudelphinus delphis'
- 'Delphinus intermedius is recombined as Feresa intermedia'
- 'Delphinus lophogenius is recombined as Acrodelphis lophogenius'
- 'Delphinus melas is recombined as Globicephala melas'
- 'Desmostylus belongs to Halitheriidae'
- 'Dinoziphius belongs to Physeteridae'
- 'Dioplodon belongs to Physeteridae'
- 'Dioplotherium belongs to Halitheriidae'
- 'Dorudon belongs to Basilosauridae'
- 'Dugong belongs to Dugongidae'
- 'Eboroziphius belongs to Physeteridae'
- 'Eira belongs to Mustelidae'
- 'Encheiziphius belongs to Physeteridae'
- 'Encheiziphius teretirostris belongs to Encheiziphius'
- 'Eosiren belongs to Halitheriidae'
- 'Eotherium belongs to Titanotheriidae'
- 'Eotherium is replaced by Eotheroides'
- 'Eotheroides belongs to Halitheriidae'
- 'Epiodon belongs to Physeteridae'
- 'Eubalaena belongs to Balaenidae'
- 'Eucetites is a nomen dubium'
- 'Eucetites juliensis is a nomen nudum'
- 'Eucetus belongs to Balaenidae'
- 'Eudelphinus belongs to Delphinidae'
- 'Eudelphis belongs to Delphinidae'
- 'Eumetopias belongs to Otariidae'
- 'Euphysetes belongs to Physeteridae'
- 'Eurhinodelphis belongs to Platanistidae'
- 'Eurhinorhynchus is a misspelling of Eurhinodelphis'
- 'Eurhinodelphis ambiguus belongs to Eurhinodelphis'
- 'Felsinotherium belongs to Halitheriidae'
- 'Fucotherium belongs to Halitheriidae'
- 'Globicephalus is a misspelling of Globicephala'
- 'Globiceps is a subjective synonym of Globicephala'
- 'Glyphidelphis belongs to Delphinidae'
- 'Graphiodon belongs to Squalodontidae'
- 'Gryphoca belongs to Phocidae'
- 'Gypsophoca belongs to Otariidae'
- 'Hapalomys belongs to Muridae'
- 'Histriophoca belongs to Phocidae'
- 'Homaeocetus belongs to Physeteridae'
- 'Hoplocetus belongs to Physeteridae'
- 'Hydrarchos belongs to Basilosauridae'
- 'Hydrodamalis belongs to Hydrodamalidae'
- 'Idiocetus belongs to Balaenidae'
- 'Inia belongs to Platanistidae'
- 'Iniopsis belongs to Platanistidae'
- 'Ischyrorhynchus belongs to Platanistidae'
- 'Isocetus belongs to Balaenidae'
- 'Isothrix belongs to Octodontidae'
- 'Ixacanthus belongs to Platanistidae'
- 'Kekenodon belongs to Basilosauridae'
- 'Kogia belongs to Physeteridae'
- 'Kyphobalaena belongs to Balaenidae'
- 'Lagenocetus belongs to Physeteridae'
- 'Lagenorhynchus belongs to Delphinidae'
- 'Lagenorhynchus (Electra) belongs to Lagenorhynchus'
- 'Lagenorhynchus (Leucopleurus) was reranked as Leucopleurus and belongs to Delphinidae'
- 'Leptonyx is replaced by Leptonychotes'
- 'Lissodelphis belongs to Delphinidae'
- 'Lonchophylla belongs to Phyllostomatidae'
- 'Lophocetus belongs to Platanistidae'
- 'Macleayius belongs to Balaenidae'
- 'Macrochirifer belongs to Platanistidae'
- 'Macrochirifer vindobonensis is an objective synonym of Delphinus brachyspondylus'
- 'Macrophoca is a subjective synonym of Squalodon'
- 'Macrotus belongs to Phyllostomatidae'
- 'Manatherium belongs to Trichechidae'
- 'Manati belongs to Hydrodamalidae'
- 'Manatus belongs to Sirenia'
- 'Meganeuron belongs to Physeteridae'
- 'Megaptera belongs to Balaenidae'
- 'Megaptera (Eschrichtius) was reranked as Eschrichtius and belongs to Balaenidae'
- 'Megapteropsis belongs to Balaenidae'
- 'Merycochoerus (Brachycrus) was reranked as Brachycrus and belongs to Agriochoeridae'
- 'Mesocetus belongs to Balaenidae'
- 'Mesocetus is replaced by Diaphorocetus'
- 'Mesodiodon belongs to Physeteridae'
- 'Mesomys belongs to Octodontidae'
- 'Mesoplodon belongs to Physeteridae'
- 'Mesoplodon (Cetorhynchus) was reranked as Cetorhynchus and belongs to Platanistidae'
- 'Mesotaria belongs to Phocidae'
- 'Mesoteras belongs to Balaenidae'
- 'Metachirus belongs to Didelphidae'
- 'Metaxytherium belongs to Halitheriidae'
- 'Metopocetus belongs to Balaenidae'
- 'Micropterus belongs to Physeteridae'
- 'Miosiren belongs to Halitheriidae'
- 'Mirounga belongs to Phocidae'
- 'Monachus belongs to Phocidae'
- 'Monodon belongs to Delphinidae'
- 'Monotherium belongs to Phocidae'
- 'Myoprocta belongs to Dasyproctidae'
- 'Mysticetus belongs to Balaenidae'
- 'Narwalus belongs to Delphinidae'
- 'Neacomys belongs to Cricetinae'
- 'Neobalaena belongs to Balaenidae'
- 'Neofelis belongs to Felidae'
- 'Neomeris belongs to Delphinidae'
- 'Neophocaena belongs to Delphinidae'
- 'Neorca belongs to Delphinidae'
- 'Neoziphius belongs to Physeteridae'
- 'Notiocetus belongs to Balaenidae'
- 'Odobenotherium belongs to Odobenidae'
- 'Odobenus belongs to Odobenidae'
- 'Oligoryzomys belongs to Cricetinae'
- 'Ommatophoca belongs to Phocidae'
- 'Ontocetus belongs to Physeteridae'
- 'Orca belongs to Delphinidae'
- 'Orca (Feresa) was reranked as Feresa and belongs to Delphinidae'
- 'Orca (Gladiator) belongs to Orca'
- 'Orca (Orcaella) was reranked as Orcaella and belongs to Delphinidae'
- 'Orcinus belongs to Delphinidae'
- 'Orcopsis belongs to Delphinidae'
- 'Orthodon is a subjective synonym of Physeter'
- 'Orycterocetus belongs to Physeteridae'
- 'Otaria belongs to Otariidae'
- 'Oulodon belongs to Physeteridae'
- 'Oxystomus belongs to Trichechidae'
- 'Pachycetus belongs to Balaenidae'
- 'Pachyspondylus is a nomen vanum'
- 'Pagiodon belongs to Cete'
- 'Pagiodon grandis belongs to Pagiodon'
- 'Pagomys belongs to Phocidae'
- 'Pagophilus belongs to Phocidae'
- 'Palaeobalaena belongs to Balaenidae'
- 'Palaeobalaena is replaced by Palaeocetus'
- 'Palaeobalaena sedgwicki is replaced by Palaeocetus sedgwicki'
- 'Palaeocetus belongs to Balaenidae'
- 'Palaeodelphis belongs to Physeteridae'
- 'Palaeopontoporia belongs to Platanistidae'
- 'Paleophoca is corrected as Palaeophoca and belongs to Phocidae'
- 'Paracetus belongs to Physeteridae'
- 'Pelycorhamphus belongs to Physeteridae'
- 'Phoca belongs to Phocidae'
- 'Phoca ursina is recombined as Arctocephalus ursinus'
- 'Phocaena belongs to Delphinidae'
- 'Phocaena (Acanthodelphis) was reranked as Acanthodelphis and belongs to Delphinidae'
- 'Phocaena spinipinnis is recombined as Acanthodelphis spinipinnis'
- 'Phocaenopsis belongs to Delphinidae'
- 'Phocageneus belongs to Platanistidae'
- 'Phocanella belongs to Phocidae'
- 'Phocarctos belongs to Otariidae'
- 'Phococetus belongs to Squalodontidae'
- 'Phocodon belongs to Squalodontidae'
- 'Physalus belongs to Balaenidae'
- 'Physeter belongs to Physeteridae'
- 'Physeterula belongs to Physeteridae'
- 'Physetodon belongs to Physeteridae'
- 'Physodon belongs to Physeteridae'
- 'Physorhinus belongs to Phocidae'
- 'Physotherium belongs to Physeteridae'
- 'Placoziphius is a nomen nudum'
- 'Platanista belongs to Platanistidae'
- 'Platydelphis belongs to Platanistidae'
- 'Platyphoca belongs to Phocidae'
- 'Platyrhynchus belongs to Otariidae'
- 'Platyrhynchus is a subjective synonym of Platydelphis'
- 'Plesiocetus belongs to Balaenidae'
- 'Plesiocyon belongs to Canidae'
- 'Pontogeneus belongs to Basilosauridae'
- 'Pontoleo belongs to Otariidae'
- 'Pontoplanodes belongs to Platanistidae'
- 'Pontoporia belongs to Platanistidae'
- 'Pontotherium belongs to Halitheriidae'
- 'Portheodon is a nomen nudum'
- 'Potamotherium belongs to Mustelidae'
- 'Priodontes belongs to Dasypodidae'
- 'Priscophyseter belongs to Physeteridae'
- 'Pristinocetus belongs to Delphinidae'
- 'Pristiphoca belongs to Phocidae'
- 'Proechimys belongs to Octodontidae'
- 'Prohalicore belongs to Dugongidae'
- 'Prophoca belongs to Phocidae'
- 'Prorastomus belongs to Prorastomidae'
- 'Prosqualodon belongs to Squalodontidae'
- 'Proterocetus belongs to Tohoraata'
- 'Proterocetus palpabilis belongs to Proterocetus'
- 'Protobalaena is corrected as Probalaena and belongs to Balaenidae'
- 'Protobalaena belongs to Balaenidae'
- 'Protoziphius is corrected as Proroziphius and belongs to Physeteridae'
- 'Pseudorca belongs to Delphinidae'
- 'Pterobalaena belongs to Balaenidae'
- 'Pugmeodon belongs to Halitheriidae'
- 'Pusa belongs to Phocidae'
- 'Rhabdosteus belongs to Platanistidae'
- 'Rhachianectes belongs to Balaenidae'
- 'Rhegnopsis belongs to Balaenidae'
- 'Rhinopithecus belongs to Cercopithecidae'
- 'Rhytisodon belongs to Squalodontidae'
- 'Ribodon belongs to Trichechidae'
- 'Rosmarus belongs to Odobenidae'
- 'Rytina belongs to Hydrodamalidae'
- 'Rytiodus belongs to Halitheriidae'
- 'Sagmatias belongs to Delphinidae'
- 'Saurocetes is replaced by Saurodelphis'
- 'Saurocetus belongs to Basilosauridae'
- 'Saurodelphis belongs to Platanistidae'
- 'Scaldicetus belongs to Physeteridae'
- 'Schizodelphis belongs to Platanistidae'
- 'Scotomanes belongs to Vespertilionidae'
- 'Sibbaldius (Rudolphius) was reranked as Rudolphius and belongs to Balaenidae'
- 'Sibbaldus belongs to Balaenidae'
- 'Siphonocetus belongs to Balaenidae'
- 'Sirene belongs to Hydrodamalidae'
- 'Smilocomptus [misspelled as Smilocamptus] belongs to Squalodontidae'
- 'Solenodon belongs to Solenodontidae'
- 'Sotalia belongs to Delphinidae'
- 'Sousa belongs to Delphinidae'
- 'Speothos belongs to Canidae'
- 'Squalodon belongs to Squalodontidae'
- 'Steno (Stenella) belongs to Steno'
- 'Stenodelphis belongs to Platanistidae'
- 'Stenodon belongs to Balaenidae'
- 'Stenorhinchus is replaced by Ogmorhinus'
- 'Stereodelphis belongs to Squalodontidae'
- 'Synostodon is a nomen nudum'
- 'Tretosphys belongs to Platanistidae'
- 'Tretulias belongs to Balaenidae'
- 'Trichechus belongs to Odobenidae'
- 'Trichecodon belongs to Odobenidae'
- 'Trichys belongs to Hystricidae'
- 'Tursio belongs to Delphinidae'
- 'Tursiops belongs to Delphinidae'
- 'Tylonycteris belongs to Vespertilionidae'
- 'Typhlomys belongs to Myoxidae'
- 'Ulias belongs to Balaenidae'
- 'Uranodon belongs to Physeteridae'
- 'Uropsilus belongs to Talpidae'
- 'Zeuglodon belongs to Basilosauridae'
- 'Zeuglodon pygmaeus is recombined as Agorophius pygmaeus'
- 'Ziphioides belongs to Physeteridae'
- 'Ziphiopsis belongs to Physeteridae'
- 'Ziphiorrhynchus belongs to Physeteridae'
- 'Ziphirostrum belongs to Physeteridae'
- 'Ziphius belongs to Physeteridae'