Here's another skeletal reconstruction I've done. This time, it's of the large Middle-Late Miocene pinniped Allodesmus.
Allodesmus is a genus of very large sea lion-like pinniped. This is based on a skeletal mount of Allodesmus kernensis from the Middle Miocene Sharktooth Hill Bonebed of Central California. Allodesmus is known from the early Middle Miocene of California (Allodesmus packardi, found near Stanford University) and even the early Late Miocene of California (Santa Cruz County). Several species of Allodesmus have also been recovered from Baja California, the late Miocene of Washington state, and Japan. Thus, it appeared that Allodesmus had a circum-North Pacific distribution for a substantial chunk of the Miocene.
Allodesmus kernensis was approximately 10' long, and about in the size range of extant Steller's Sea Lions (Eumetopias jubatus). It is placed in the extinct family Desmatophocidae, which it shares with the much smaller Desmatophoca, two species of which are known from the early and middle Miocene of Oregon and Washington.