Opinions from J. A. Allen 1880
- 'Arctocephalus belongs to Otariidae'
- 'Arctocephalus forsteri belongs to Arctocephalus'
- 'Arctocephalus hookeri is recombined as Phocarctos hookeri'
- 'Arctocephalus lobatus is recombined as Zalophus lobatus'
- 'Callocephalus is a subjective synonym of Phoca'
- 'Callorhinus belongs to Otariidae'
- 'Cystophora belongs to Cystophorinae'
- 'Cystophorina is corrected as Cystophorinae and belongs to Phocidae'
- 'Erignathus belongs to Phocinae'
- 'Eumetopias belongs to Otariidae'
- 'Halichoerus belongs to Phocinae'
- 'Halichoerus antarcticus is a subjective synonym of Phoca (Phoca) vitulina'
- 'Histriophoca belongs to Phocinae'
- 'Macrorhinus belongs to Cystophorinae'
- 'Mirounga angustirostris is recombined as Macrorhinus angustirostris'
- 'Monachus belongs to Phocinae'
- 'Odobenotherium is a subjective synonym of Odobaenus'
- 'Odobenus is corrected as Odobaenus and belongs to Odobaenidae'
- 'Odontobaenus is a subjective synonym of Odobaenus'
- 'Otaria australis is a subjective synonym of Zalophus lobatus'
- 'Otaria californiana is recombined as Zalophus californianus'
- 'Otaria leclercii belongs to Otaria' according to Delfortrie 1872
- 'Otaria leclercii is a nomen dubium'
- 'Otaria oudriana is a nomen dubium'
- 'Otariina was reranked as the family Otariidae and belongs to Pinnipedia'
- 'Phoca belongs to Phocinae'
- 'Phoca antarctica is recombined as Arctocephalus antarcticus'
- 'Phoca barbata is recombined as Erignathus barbatus'
- 'Phoca caspica is recombined as Phoca (Pusa) caspica'
- 'Phoca cristata is recombined as Cystophora cristata'
- 'Phoca debilis is recombined as Squalodon debilis'
- 'Callocephalus dimidiatus is a subjective synonym of Phoca (Pusa) foetida'
- 'Phoca equestris is a subjective synonym of Histriophoca fasciata'
- 'Phoca fasciata is recombined as Histriophoca fasciata'
- 'Phoca foetida is recombined as Phoca (Pusa) foetida'
- 'Phoca groenlandica is recombined as Phoca (Pagophilus) groenlandica'
- 'Phoca grypus is recombined as Halichoerus grypus'
- 'Phoca modesta is recombined as Squalodon modestus'
- 'Phoca nautica is a subjective synonym of Erignathus barbatus'
- 'Phoca rosmarus is recombined as Odobaenus rosmarus'
- 'Phoca stelleri is recombined as Eumetopias stelleri'
- 'Phoca tropicalis is recombined as Monachus tropicalis'
- 'Phoca ursina is recombined as Callorhinus ursinus'
- 'Phoca vitulina is recombined as Phoca (Phoca) vitulina'
- 'Phocadae is corrected as Phocidae and belongs to Pinnipedia'
- 'Phocarctos belongs to Otariidae'
- 'Phocinae belongs to Phocidae'
- 'Rosmaridae is a subjective synonym of Odobaenidae'
- 'Rosmarus is a subjective synonym of Odobaenus'
- 'Rosmarus arcticus is a subjective synonym of Odobaenus obesus'
- 'Trichechidae is a subjective synonym of Odobaenidae'
- 'Trichechus is a subjective synonym of Odobaenus'
- 'Trichechus cookii is a subjective synonym of Odobaenus obesus'
- 'Trichechus divergens is a subjective synonym of Odobaenus obesus'
- 'Trichechus obesus is recombined as Odobaenus obesus'
- 'Zalophus belongs to Otariidae'