Anchitherium
Anchitherium is a genus of extinct equid with a three-toed hoof.
Anchitherium was a browsing horse that originated in the early Miocene of North America, being found as far south as Panama, and subsequently dispersed to Europe and Asia, where it gave rise to the larger bodied genus Sinohippus. It was around high at the shoulder, and probably represented a side-branch of horse evolution that left no modern descendants.