Opinions from A. Berta 2009
- 'Acrophoca belongs to Phocidae'
- 'Aivukus belongs to Odobeninae'
- 'Alachtherium belongs to Odobeninae'
- 'Allodesmus belongs to Phocoidea'
- 'Arctocephalus belongs to Otariidae'
- 'Callophoca belongs to Monachinae'
- 'Callorhinus belongs to Otariidae'
- 'Cryptophoca belongs to Phocinae'
- 'Cystophora belongs to Phocinae'
- 'Desmatophoca belongs to Phocoidea'
- 'Dusignathinae belongs to Odobenidae'
- 'Dusignathus belongs to Dusignathinae'
- 'Enaliarctos belongs to Pinnipedimorpha'
- 'Erignathus belongs to Phocinae'
- 'Eumetopias belongs to Otariidae'
- 'Gomphotaria belongs to Dusignathinae'
- 'Halichoerus belongs to Phocinae'
- 'Histriophoca belongs to Phocinae'
- 'Homiphoca belongs to Phocidae'
- 'Hydrarctos belongs to Otariidae'
- 'Hydrurga belongs to Monachinae'
- 'Imagotaria belongs to Odobenidae'
- 'Leptonychotes belongs to Monachinae'
- 'Leptophoca belongs to Phocinae'
- 'Lobodon belongs to Monachinae'
- 'Mirounga belongs to Monachinae'
- 'Monachinae belongs to Phocidae'
- 'Monachus belongs to Monachinae'
- 'Monotherium belongs to Monachinae'
- 'Neophoca belongs to Otariidae'
- 'Neotherium belongs to Odobenidae'
- 'Odobaenidae is corrected as Odobenidae and belongs to Pinnipedia'
- 'Odobeninae belongs to Odobenidae'
- 'Odobenus belongs to Odobeninae'
- 'Ommatophoca belongs to Monachinae'
- 'Otaria belongs to Otariidae'
- 'Otariina was reranked as the family Otariidae and belongs to Pinnipedia'
- 'Pagophilus belongs to Phocinae'
- 'Phoca belongs to Phocinae'
- 'Phocanella belongs to Phocinae'
- 'Phocarctos belongs to Otariidae'
- 'Phocinae belongs to Phocidae'
- 'Phocoidea belongs to Pinnipedia'
- 'Pinnipedia was reranked as a unranked clade and belongs to Pinnipediformes'
- 'Pinnipediformes belongs to Pinnipedimorpha'
- 'Piscophoca belongs to Phocidae'
- 'Pithanotaria belongs to Otariidae'
- 'Pliophoca belongs to Monachinae'
- 'Pontolis belongs to Dusignathinae'
- 'Pontophoca belongs to Monachinae'
- 'Proneotherium belongs to Odobenidae'
- 'Prophoca belongs to Phocinae'
- 'Prototaria belongs to Odobenidae'
- 'Pseudotaria belongs to Odobenidae'
- 'Pteronarctos belongs to Pinnipediformes'
- 'Thalassoleon belongs to Otariidae'
- 'Valenictus belongs to Odobeninae'
- 'Zalophus belongs to Otariidae'