Oreodont

About it

Sheep-sized hoofed plant-eaters whose skulls are the commonest mammal fossils of the Oligocene White River beds of South Dakota, Nebraska, and Wyoming. Only those from private land can be sold; federal land needs a permit.

Type

Fossil (vertebrate)

Group

Oreodont (mammal)

Colours

cream, tan, brown, pinkish tan

Transparency

opaque

Periods

Paleogene, Neogene

Typical values: real specimens vary. For more, see mindat.org.