Hyracotherium was ancestral to modern-day horses, as well as numerous species of prehistoric horse that roamed the plains of the Tertiary and Quaternary periods. As with many such evolutionary precursors, Hyracotherium didn't look much like a "true" horse, with its slender body and three- and four-toed feet.
Hyracotherium
The horse formerly known as Eohippus. More about Hyracotherium
Hyracotherium
Wikimedia CommonsMore About Prehistoric Horses
Prehistoric Horses - The Story of Equine EvolutionPrehistoric Proboscids - Mammoths, Mastodons and Early ElephantsSaber-Toothed Cats - The "Tigers" of the Prehistoric Plains
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