Opinions from L. G. Barnes et al. 1985

- 'Acrodelphidae belongs to Platanistoidea'
- 'Aetiocetidae belongs to Mysticeti'
- 'Agorophiidae belongs to Squalodontoidea'
- 'Albireonidae belongs to Delphinoidea'
- 'Archaeoceti belongs to Cetacea'
- 'Archaeosireninae is an invalid subgroup of Halitheriinae'
- 'Balaenidae belongs to Mysticeti'
- 'Balaenopteridae belongs to Mysticeti'
- 'Balaenopterinae belongs to Balaenopteridae'
- 'Basilosauridae belongs to Archaeoceti'
- 'Basilosaurinae belongs to Basilosauridae'
**'Catodontidae is a subjective synonym of Physeteridae'**- 'Cetotheriinae was reranked as the family Cetotheriidae and belongs to Mysticeti'
**'Choneziphiidae is an invalid subgroup of Ziphiidae'**- 'Delphinapterinae belongs to Monodontidae'
- 'Delphinidae belongs to Delphinoidea'
- 'Delphininae belongs to Delphinidae'
- 'Delphinoidea belongs to Odontoceti'
- 'Dorudontidae was reranked as the subfamily Dorudontinae and belongs to Basilosauridae'
- 'Dugongidae belongs to Sirenia'
- 'Dugonginae belongs to Dugongidae'
- 'Eotherioidinae is an invalid subgroup of Halitheriinae'
- 'Eschrichtiidae belongs to Mysticeti'
- 'Eurhinodelphidae is a subjective synonym of Rhabdosteidae'
**'Globidelphinidae is an invalid subgroup of Globicephalinae'**- 'Globiocephalidae was reranked as the subfamily Globicephalinae and belongs to Delphinidae'
**'Grampidae is an invalid subgroup of Globicephalinae'**- 'Halianassinae is an invalid subgroup of Halitheriinae'
- 'Halicoridae is an objective synonym of Dugongidae'
**'Halitherida is an objective synonym of Halitheriidae'**- 'Halitheriidae was reranked as the family Halitheriinae and belongs to Dugongidae'
- 'Hemisyntrachelidae is an invalid subgroup of Delphinidae'
- 'Holodontidae is an invalid subgroup of Delphinidae'
- 'Hoplocetinae belongs to Physeteridae'
- 'Hydrodamalidae was reranked as the subfamily Hydrodamalinae and belongs to Dugongidae'
- 'Hyperoodontidae is an invalid subgroup of Ziphiidae'
- 'Iniana was reranked as the family Iniidae and belongs to Platanistoidea'
- 'Kampholophinae belongs to Kentriodontidae'
- 'Kentriodontidae belongs to Delphinoidea'
- 'Kentriodontinae belongs to Kentriodontidae'
- 'Kogiidae belongs to Physeteroidea'
- 'Lipotidae belongs to Platanistoidea'
- 'Lissodelphinae belongs to Delphinidae'
- 'Lophocetinae belongs to Kentriodontidae'
- 'Manatidae is an objective synonym of Trichechidae'
- 'Megapterinae belongs to Balaenopteridae'
- 'Metaxytheriinae is an invalid subgroup of Halitheriinae'
**'Microzeuglodontidae is an invalid subgroup of Agorophiidae'**- 'Miosireninae belongs to Trichechidae'
- 'Monodontidae belongs to Delphinoidea'
- 'Monodontinae belongs to Monodontidae'
- 'Mysticeti belongs to Cetacea'
- 'Neobalaenidae belongs to Mysticeti'
- 'Odontoceti belongs to Cetacea'
- 'Orcellidae was reranked as the subfamily Orcaellinae and belongs to Monodontidae'
- 'Orcininae is an invalid subgroup of Globicephalinae'
- 'Parapontoporiinae belongs to Pontoporiidae'
- 'Patriocetidae was reranked as the subfamily Patriocetinae and belongs to Squalodontidae'
- 'Phocaenina was reranked as the family Phocoenidae and belongs to Delphinoidea'
- 'Phocoeninae belongs to Phocoenidae'
- 'Phocoenoidinae belongs to Phocoenidae'
- 'Physeteridae belongs to Physeteroidea'
- 'Physeterinae belongs to Physeteridae'
- 'Physeteroidea belongs to Odontoceti'
**'Physodontidae is an invalid subgroup of Physeteridae'**- 'Platanistina was reranked as the family Platanistidae and belongs to Platanistoidea'
- 'Platanistoidea belongs to Odontoceti'
**'Pontoplanodidae is an invalid subgroup of Iniidae'**- 'Pontoporiidae belongs to Platanistoidea'
- 'Pontoporiinae belongs to Pontoporiidae'
- 'Prorastomidae belongs to Sirenia'
- 'Protocetidae belongs to Archaeoceti'
- 'Protosirenidae belongs to Sirenia'
- 'Prototheriidae is an invalid subgroup of Halitheriinae'
- 'Rhabdosteidae belongs to Squalodontoidea'
- 'Rhachianectidae is an objective synonym of Eschrichtiidae'
- 'Saurocetidae is an invalid subgroup of Iniidae'
**'Sotaliinae is an invalid subgroup of Steninae'**- 'Squalodelphidae belongs to Squalodontoidea'
- 'Squalodontidae belongs to Squalodontoidea'
- 'Squalodontinae belongs to Squalodontidae'
- 'Squalodontoidea belongs to Odontoceti'
- 'Stenidae was reranked as the subfamily Steninae and belongs to Delphinidae'
**'Stenodelphinae is a subjective synonym of Pontoporiidae'**- 'Stenoninae is a subjective synonym of Steninae'
- 'Trichechidae belongs to Sirenia'
- 'Ziphiidae was reranked as the tribe Ziphiina and belongs to Ziphioidea'
- 'Ziphioidea belongs to Odontoceti'