What Was The Earliest Known Ancestor Of The Horse?

What Was The Earliest Known Ancestor Of The Horse? During the early Eocene there appeared the first ancestral horse, a hoofed, browsing mammal designated correctly as Hyracotherium but more commonly called Eohippus What was the first horse ever? The skeleton of Eohippus, a mammal considered to be the first known horse. Officially, taxonomists classify it