Hyracodon (Running Rhino) Jaw Section - Nebraska

This is a jaw section of Hyracodon nebraskensis. It was collected from the the Brule Formation in Nebraska and would be approximately 32-34 million years old. This section contains 4 teeth and 3 crack repairs an a little restoration.

This specimen was collected by the Black Hills Institute.

Hyracodons were hornless running rhinoceroses with large heads compared to their slight, pony-like bodies. They are an extinct line as I'm sure you've noticed there are no Rhinos browsing the planes of North America today.