Anchitherium

Anchitherium, a noteworthy animal that lived in Europe and North America during Upper Eocene times. It had affinities to the tapir-like Palæotherium (q.v.) and true horse. Each foot had three hoofs, the middle one being the largest, and all reached to the ground. The anchitherium was about the size of a small pony, and is looked upon as one of the ancestors of the existing horse.