Enaliarctidae is an extinct family of pinniped from the order Carnivora with only 1 genus,the Enaliarctos. The five species in the genus Enaliarctos represented the oldest known pinniped fossils, having been recovered from late Oligocene and early Miocene (ca. 24-22 million years ago) strata of California and Oregon. Enaliarctos has been heralded as the ancestor of all known pinnipeds.