Pinnarctidion

Pinnarctidion is an extinct genus of basal pinnipediform that lived in California and Oregon during the early Miocene epoch. There are currently two species in this genus, Pinnarctidion bishopi and Pinnarctidion rayi.^[1] It used to be classified closely to Phocoidea (earless seals) but was later placed as a stem pinniped.^[2][3]

Pinnarctidion Temporal range: Early Miocene
Scientific classification
Domain:	Eukarya
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Infraorder:	Arctoidea
(unranked):	Pinnipedimorpha
Genus:	Pinnarctidion Barnes, 1979
Species:	Pinnarctidion bishopi Pinnarctidion rayi

It, along with other early pinnipedimorphs, were coastal species feeding on aquatic prey such as fish.^[2]