This Specimen has been sold.
2.6" Oreodont (Leptauchenia) Jaw Section - South Dakota
This is a jaw section of an Oreodont (Leptauchenia) that contains 3 complete teeth, from the Brule Formation, South Dakota. This specimen is from the left maxilla (upper jaw). It is 32-34 million years old.
Oreodonts are an extinct mammal most closely related to camels and pigs. They have no close relatives living today. They were herbivorous, with short faces and fang-like canine teeth. About the size of a sheep, they roamed the plains of North America in huge numbers during the Oligocene period.