The White River Fauna are fossil animals found in the White River Badlands of South Dakota, Wyoming and Nebraska in the United States including the Badlands National Park. The fossils have been found in the Chadron, Brule, and the Arikaree Formations. Animals from the White River Badlands date from the Oligocene, the Miocene, and the Pliocene Epochs.
Genera include:
Alligator (Crocodilian)
Archaeotherium (Entelodont)
Bathornis (Predatory bathornithid bird)
Dinictis (Nimravid)
Eporeodon (Oreodont)
Eusmilus (Nimravid)
Hoplophoneus (Nimravid)
Hyaenodon (Hyaenodont)
Hyracodon (Running Rhino)
Ischyromys (Ground Squirrel-like Rodent)
Leptomeryx (Tragulid-like Even-Toed Ungulate)
Merycoidodon (Oreodont)
Mesohippus (Horse)
Metamynodon (Aquatic Rhino)
Miniochoerus (Oreodont)
Paracrax (Predatory bathornithid bird)
Poebrotherium (Camel)
Subhyracodon (Rhinoceros)
