Oligocene Ruminant (Leptomeryx) Jaw Section

This is a jaw section containing a beautiful sequence of 3 teeth and one partial tooth from the Oligocene ruminant Leptomeryx evansi. They were small hornless mammals related to modern antelopes. It comes from the Brule Formation in South Dakota making it around 30-34 million years old.

This specimen as was collected, prepared and identified by the Black Hills Institute.