Serravallian extinctions

Tomarctus is a genus of borophagine canid which inhabited most of North America during the late Early Miocene to the Early Barstovian age of the Middle Miocene (23—16 million years ago). == Description ==

Hypertragulidae is an extinct family of Paleogene ruminants endemic to North America from the Eocene until the Oligocene.

thumb | right | alt=Remains of a jaw, brownish in color, with dark brown teeth | Jaw of Protepicyon raki Protepicyon is an extinct monospecific genus of the Borophaginae subfamily of canids native to North America. It lived during the Barstovian stage of the Middle Miocene 16.0—13.6 mya. One of the top predators of its time, it was the probable ancestor of the better known Epicyon, and is known from remains in California and New Mexico.

Pliocyon is an extinct genus of amphicyonids which inhabited North America during the Middle Miocene 16.0—13.6 Ma, existing for approximately . Fossils have been uncovered in South Florida, Oregon, and western Nebraska.