Opinions from G. G. Simpson 1945

  • 'Acrodelphidae belongs to Delphinoidea'
  • 'Acrodelphis belongs to Acrodelphidae'
  • 'Acrotypotherium belongs to Mesotheriinae'
  • 'Agabelus belongs to Delphinidae'
  • 'Aglaocetus belongs to Cetotheriidae'
  • 'Agorophiidae belongs to Squalodontoidea'
  • 'Agorophius belongs to Agorophiidae'
  • 'Agriocetus belongs to Archaeoceti'
  • 'Alticamelinae belongs to Camelidae'
  • 'Alticamelus belongs to Camelinae'
  • 'Altomeryx is a nomen nudum'
  • 'Amphicetus belongs to Cetotheriidae'
  • 'Anisodelphis belongs to Iniinae'
  • 'Anoplonassa belongs to Ziphiidae'
  • 'Apenophyseter belongs to Hoplocetinae'
  • 'Archaeoceti belongs to Cetacea'
  • 'Archaeodelphis belongs to Archaeoceti'
  • 'Argyrocetus belongs to Eurhinodelphidae'
  • 'Argyrodelphis is a subjective synonym of Notocetus'
  • 'Auchenia is a subjective synonym of Lama'
  • 'Aulophyseter belongs to Hoplocetinae'
  • 'Balaena belongs to Balaenidae'
  • 'Balaenodon belongs to Physeterinae'
  • 'Balaenoptera belongs to Balaenopteridae'
  • 'Balaenopteridae belongs to Mysticeti'
  • 'Balaenotus belongs to Balaenidae'
  • 'Balaenula belongs to Balaenidae'
  • 'Balanadae is corrected as Balaenidae and belongs to Mysticeti'
  • 'Basilosauridae belongs to Archaeoceti'
  • 'Basilosaurus belongs to Basilosauridae'
  • 'Belemnoziphius belongs to Ziphiidae'
  • 'Belosphys belongs to Delphinidae'
  • 'Berardiopsis belongs to Ziphiidae'
  • 'Berardius belongs to Ziphiidae'
  • 'Bravardia belongs to Mesotheriinae'
  • 'Burtinopsis belongs to Balaenopteridae'
  • 'Camelinae belongs to Camelidae'
  • 'Camelodon belongs to Poebrotheriinae'
  • 'Camelops belongs to Camelinae'
  • 'Camelus belongs to Camelinae'
  • 'Cephalorhynchus belongs to Delphinidae'
  • 'Cephalotropis belongs to Cetotheriidae'
  • 'Cetacea belongs to Mutica'
  • 'Ceterhinops belongs to Delphinidae'
  • 'Cetotheriinae was reranked as the family Cetotheriidae and belongs to Mysticeti'
  • 'Cetotheriomorphus [misspelled as Cetotheriomorphis] belongs to Cetotheriidae'
  • 'Cetotheriopsis belongs to Cetotheriidae'
  • 'Cetotherium belongs to Cetotheriidae'
  • 'Cetotheriophanes is a subjective synonym of Balaenoptera'
  • 'Cetotherium (Eucetotherium) was reranked as Eucetotherium and belongs to Cetotheriidae'
  • 'Cetotherium (Plesiocetopsis) was reranked as Plesiocetopsis and belongs to Cetotheriidae'
  • 'Champsodelphis belongs to Acrodelphidae'
  • 'Choneziphius belongs to Ziphiidae'
  • 'Colophonodon belongs to Squalodontidae'
  • 'Cophocetus belongs to Cetotheriidae'
  • 'Cosoryx (Paracosoryx) is an invalid subgroup of Merycodus'
  • 'Cyrtodelphis is a subjective synonym of Schizodelphis'
  • 'Delphinapterus belongs to Monodontidae'
  • 'Delphinapterus (Hemisyntrachelus) was reranked as Hemisyntrachelus and belongs to Hemisyntrachelidae'
  • 'Delphinavus belongs to Delphinidae'
  • 'Delphinidae belongs to Delphinoidea'
  • 'Delphinodon belongs to Delphinidae'
  • 'Delphinoidea belongs to Odontoceti'
  • 'Delphinopsis belongs to Delphinidae'
  • 'Delphinus belongs to Delphinidae'
  • 'Delphinus (Grampus) was reranked as Grampus and belongs to Delphinidae'
  • 'Diaphorocetus belongs to Hoplocetinae'
  • 'Dinoziphius belongs to Physeterinae'
  • 'Diochotichus is a subjective synonym of Notocetus'
  • 'Dorudon belongs to Dorudontidae'
  • 'Dorudontidae belongs to Archaeoceti'
  • 'Dyseotylopus belongs to Camelinae'
  • 'Eboroziphius belongs to Ziphiidae'
  • 'Elephas americanus is recombined as Mammut americanum'
  • 'Eocetus belongs to Protocetidae'
  • 'Eoplatanista belongs to Acrodelphidae'
  • 'Eotylopus belongs to Poebrotheriinae'
  • 'Epitriplopus belongs to Triplopodinae'
  • 'Eubalaena belongs to Balaenidae'
  • 'Eurhinodelphidae belongs to Delphinoidea'
  • 'Eurhinodelphis belongs to Eurhinodelphidae'
  • 'Eutypotherium belongs to Mesotheriinae'
  • 'Gigantocamelus belongs to Camelinae'
  • 'Globicephala belongs to Delphinidae'
  • 'Gnathabelodontinae is a subjective synonym of Gomphotheriinae'
  • 'Grypolithax belongs to Delphinidae'
  • 'Hemisyntrachelidae belongs to Delphinoidea'
  • 'Herpetocetus belongs to Cetotheriidae'
  • 'Hesperocetus belongs to Iniinae'
  • 'Heterocetus belongs to Cetotheriidae'
  • 'Heterodelphis belongs to Acrodelphidae'
  • 'Hexameryx is a subjective synonym of Hexobelomeryx'
  • 'Hoplocetinae belongs to Physeteridae'
  • 'Hoplocetus belongs to Hoplocetinae'
  • 'Hyperoodon belongs to Ziphiidae'
  • 'Idiocetus belongs to Balaenopteridae'
  • 'Idiophyseter belongs to Physeterinae'
  • 'Idiorophus belongs to Hoplocetinae'
  • 'Inia belongs to Iniinae'
  • 'Iniinae belongs to Platanistidae'
  • 'Iniopsis belongs to Delphinidae'
  • 'Interatheridae is corrected as Interatheriidae and belongs to Typotheria'
  • 'Interatheriinae belongs to Interatheriidae'
  • 'Ischyrorhynchus belongs to Iniinae'
  • 'Isocetus belongs to Cetotheriidae'
  • 'Ixacanthus belongs to Delphinidae'
  • 'Kekenodon belongs to Dorudontidae'
  • 'Kentriodon belongs to Delphinidae'
  • 'Kogia belongs to Kogiinae'
  • 'Kogiinae belongs to Physeteridae'
  • 'Kogiopsis belongs to Kogiinae'
  • 'Lagenorhynchus belongs to Delphinidae'
  • 'Lama belongs to Camelinae'
  • 'Lamprolithax belongs to Delphinidae'
  • 'Liolithax belongs to Delphinidae'
  • 'Lipotes belongs to Iniinae'
  • 'Lissodelphis belongs to Delphinidae'
  • 'Lonchodelphis belongs to Stenodelphininae'
  • 'Lophocetus belongs to Hemisyntrachelidae'
  • 'Loxolithax belongs to Delphinidae'
  • 'Macrochirifer belongs to Delphinidae'
  • 'Mauicetus belongs to Cetotheriidae'
  • 'Megacamelus belongs to Camelinae'
  • 'Megaptera belongs to Balaenopteridae'
  • 'Megapteropsis belongs to Balaenopteridae'
  • 'Merychyinae belongs to Merycoidodontidae'
  • 'Merycochoerus (Brachycrus) was reranked as Brachycrus and belongs to Merycochoerinae'
  • 'Mesocetus belongs to Cetotheriidae'
  • 'Mesocetus is replaced by Eocetus'
  • 'Mesocetus is a subjective synonym of Diaphorocetus'
  • 'Mesoplodon belongs to Ziphiidae'
  • 'Mesoplodon (Cetorhynchus) was reranked as Cetorhynchus and belongs to Ziphiidae'
  • 'Mesoteras belongs to Balaenopteridae'
  • 'Mesotherium belongs to Mesotheriinae'
  • 'Metasqualodon belongs to Squalodontidae'
  • 'Metopocetus belongs to Cetotheriidae'
  • 'Microcetus belongs to Squalodontidae'
  • 'Microsqualodon belongs to Squalodontidae'
  • 'Microzeuglodon belongs to Archaeoceti'
  • 'Miolabis belongs to Camelinae'
  • 'Miolabis (Paratylopus) was reranked as Paratylopus and belongs to Camelinae'
  • 'Mioziphius is a subjective synonym of Ziphirostrum'
  • 'Mixocetus belongs to Cetotheriidae'
  • 'Mixodectoidea belongs to Insectivora'
  • 'Monodon belongs to Monodontidae'
  • 'Monodontidae belongs to Delphinoidea'
  • 'Morenocetus belongs to Balaenidae'
  • 'Mutica belongs to Eutheria'
  • 'Mycetes is a subjective synonym of Alouatta'
  • 'Mysticeti belongs to Cetacea'
  • 'Nannolithax belongs to Delphinidae'
  • 'Neobalaena belongs to Balaenidae'
  • 'Neomeris is a subjective synonym of Neophocaena'
  • 'Neophocaena belongs to Phocaenidae'
  • 'Neosqualodon belongs to Squalodontidae'
  • 'Notiocetus belongs to Balaenopteridae'
  • 'Notocetus belongs to Ziphiidae'
  • 'Notopithecidae was reranked as the subfamily Notopithecinae and belongs to Interatheriidae'
  • 'Odocoileini belongs to Odocoileinae'
  • 'Odontoceti belongs to Cetacea'
  • 'Oedolithax belongs to Delphinidae'
  • 'Ontocetus belongs to Physeterinae'
  • 'Orca is a subjective synonym of Orcinus'
  • 'Orca (Orcaella) was reranked as Orcaella and belongs to Delphinidae'
  • 'Orcinus belongs to Delphinidae'
  • 'Orycterocetus belongs to Physeterinae'
  • 'Oxydactylus belongs to Camelinae'
  • 'Pachyacanthus belongs to Platanistinae'
  • 'Pachycetus belongs to Cetotheriidae'
  • 'Palaeocetus belongs to Balaenopteridae'
  • 'Palaeolama belongs to Camelinae'
  • 'Palaeophocaena belongs to Phocaenidae'
  • 'Palaeoziphius belongs to Ziphiidae'
  • 'Pappocetus belongs to Protocetidae'
  • 'Parasqualodon belongs to Squalodontidae'
  • 'Parietobalaena belongs to Cetotheriidae'
  • 'Patriocetus belongs to Archaeoceti'
  • 'Peripolocetus belongs to Cetotheriidae'
  • 'Phoberodon belongs to Squalodontidae'
  • 'Phocaena belongs to Phocaenidae'
  • 'Phocaenina was reranked as the family Phocaenidae and belongs to Delphinoidea'
  • 'Phocaenopsis belongs to Phocaenidae'
  • 'Phococetus belongs to Dorudontidae'
  • 'Phocaenoides is a subjective synonym of Phocaena'
  • 'Physeter belongs to Physeterinae'
  • 'Physeteridae belongs to Physeteroidea'
  • 'Physeterinae belongs to Physeteridae'
  • 'Physeteroidea belongs to Odontoceti'
  • 'Physeterula belongs to Physeterinae'
  • 'Physetodon belongs to Physeterinae'
  • 'Pithanodelphis belongs to Delphinidae'
  • 'Platanista belongs to Platanistinae'
  • 'Platanistina was reranked as the family Platanistidae and belongs to Platanistoidea'
  • 'Platanistinae belongs to Platanistidae'
  • 'Platanistoidea belongs to Odontoceti'
  • 'Platylithax belongs to Delphinidae'
  • 'Platyosphys belongs to Basilosauridae'
  • 'Plesiocetus belongs to Balaenopteridae'
  • 'Pliauchenia belongs to Camelinae'
  • 'Pliauchenia (Megatylopus) was reranked as Megatylopus and belongs to Camelinae'
  • 'Poabromylus belongs to Poebrotheriinae'
  • 'Poebrotheriidae is a subjective synonym of Poebrotheriinae'
  • 'Poebrotheriinae belongs to Camelidae'
  • 'Poebrotherium belongs to Poebrotheriinae'
  • 'Pomatodelphis belongs to Acrodelphidae'
  • 'Pontistes belongs to Stenodelphininae'
  • 'Pontivaga belongs to Stenodelphininae'
  • 'Pontoplanodes is a subjective synonym of Saurodelphis'
  • 'Pontoporia is a subjective synonym of Stenodelphis'
  • 'Prioinia is corrected as Proinia and belongs to Iniinae'
  • 'Priscophyseter belongs to Physeterinae'
  • 'Procamelus belongs to Camelinae'
  • 'Prochenia is a nomen nudum'
  • 'Prodelphinus belongs to Delphinidae'
  • 'Prophyseter belongs to Physeterinae'
  • 'Prosqualodon belongs to Squalodontidae'
  • 'Protobalaena belongs to Balaenidae'
  • 'Protocetidae belongs to Archaeoceti'
  • 'Protocetus belongs to Protocetidae'
  • 'Protodelphinus belongs to Delphinidae'
  • 'Protolabinae is a subjective synonym of Camelinae'
  • 'Protolabis belongs to Camelinae'
  • 'Protomeryx belongs to Camelinae'
  • 'Protophocaena belongs to Phocaenidae'
  • 'Protoziphius is corrected as Proroziphius and belongs to Ziphiidae'
  • 'Protylopus belongs to Poebrotheriinae'
  • 'Prozeuglodon belongs to Basilosauridae'
  • 'Pseudoceras belongs to Camelidae'
  • 'Pseudolabidinae belongs to Camelidae'
  • 'Pseudolabis belongs to Pseudolabidinae'
  • 'Pseudorca belongs to Delphinidae'
  • 'Pseudotypotherium belongs to Mesotheriinae'
  • 'Rakomylus belongs to Stenomylinae'
  • 'Rhachianectidae belongs to Mysticeti'
  • 'Rhegnopsis belongs to Cetotheriidae'
  • 'Rhynchippidae was reranked as the subfamily Rhynchippinae and belongs to Notohippidae'
  • 'Rhytisodon belongs to Squalodontidae'
  • 'Saurocetes is replaced by Saurodelphis'
  • 'Saurocetus belongs to Squalodontidae'
  • 'Saurodelphis belongs to Iniinae'
  • 'Scaldicetus belongs to Hoplocetinae'
  • 'Schizodelphis belongs to Acrodelphidae'
  • 'Sibbaldus belongs to Balaenopteridae'
  • 'Siphonocetus belongs to Cetotheriidae'
  • 'Sotalia belongs to Delphinidae'
  • 'Squalodelphis belongs to Ziphiidae'
  • 'Squalodon belongs to Squalodontidae'
  • 'Squalodontidae belongs to Squalodontoidea'
  • 'Squalodontoidea belongs to Odontoceti'
  • 'Steno belongs to Delphinidae'
  • 'Stenodelphininae belongs to Platanistidae'
  • 'Stenodelphis belongs to Stenodelphininae'
  • 'Stenomylinae belongs to Camelidae'
  • 'Stenomylus belongs to Stenomylinae'
  • 'Stereodelphis belongs to Delphinidae'
  • 'Tanupolama belongs to Camelinae'
  • 'Tasmacetus belongs to Ziphiidae'
  • 'Thalassocetus belongs to Physeterinae'
  • 'Tiphyocetus belongs to Cetotheriidae'
  • 'Titanotylopus belongs to Camelinae'
  • 'Tretosphys belongs to Delphinidae'
  • 'Tretulias belongs to Cetotheriidae'
  • 'Triplopodidae was reranked as the subfamily Triplopodinae and belongs to Hyracodontidae'
  • 'Triplopus belongs to Triplopodinae'
  • 'Trirhizodon belongs to Squalodontidae'
  • 'Tursiops belongs to Delphinidae'
  • 'Typotheria belongs to Notoungulata'
  • 'Typothericulus belongs to Mesotheriinae'
  • 'Typotheridion belongs to Mesotheriinae'
  • 'Typotheriodon belongs to Mesotheriinae'
  • 'Typotheriopsis belongs to Mesotheriinae'
  • 'Ulias belongs to Cetotheriidae'
  • 'Xenorophus belongs to Agorophiidae'
  • 'Zarhachis belongs to Platanistinae'
  • 'Zeuglodon is a subjective synonym of Basilosaurus'
  • 'Ziphiidae was reranked as the tribe Ziphiina and belongs to Physeteroidea'
  • 'Ziphiodelphis belongs to Eurhinodelphidae'
  • 'Ziphioides belongs to Ziphiidae'
  • 'Ziphirostrum belongs to Ziphiidae'
  • 'Ziphius belongs to Ziphiidae'
  • 'Zygorhiza belongs to Dorudontidae'