''Callorhinus'' is a genus of

sea lion Sea lions are pinnipeds characterized by external ear flaps, long foreflippers, the ability to walk on all fours, short and thick hair, and a big chest and belly. Together with the fur seals, they make up the family Otariidae, eared seals. ...

. It contains the living

northern fur seal The northern fur seal (''Callorhinus ursinus'') is an eared seal found along the north Pacific Ocean, the Bering Sea, and the Sea of Okhotsk. It is the largest member of the fur seal subfamily (Arctocephalinae) and the only living species in the ...

''(Callorhinus ursinus)'' as well as the extinct ''

Callorhinus gilmorei ''Callorhinus gilmorei'' is an extinct species of fur seal that lived in Japan and western North America during the Pliocene and Early Pleistocene. ''Callorhinus gilmorei'' was similar to its close relative, the living northern fur seal T ...

'' and an unnamed species, both from the

Pliocene The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

. ''Callorhinus'' may be a sister genus to the extinct giant otariid, ''

Thalassoleon ''Thalassoleon'' ("sea lion" ) is an extinct genus of large fur seal. ''Thalassoleon'' inhabited the Northern Pacific Ocean in latest Miocene and early Pliocene. Fossils of ''T. mexicanus'' are known from Baja California and southern California. ...

''.

References

{{Taxonbar, from=Q4412222 Mammal genera Mammal genera with one living species Eared seals Taxa named by John Edward Gray Mammals described in 1859