Eohippus

Eohippus is small fossil proto-horse. It is an extinct genus of small equid ungulates.MacFadden B.J. 2005. "Evolution: Fossil horses--evidence for evolution. Science 307 (5716): 1728–1730.  The only species is E. angustidens, which was long considered a species of Hyracotherium. Its remains have been found in North America and date to the early Eocene (4856 million years ago).Froehlich D.J. 2002. Quo vadis eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla). Zoological Journal of the Linnean Society 134 (2): 141–256. 

Much of the evolution of the horse took place in North America. That is where horses originated, but became extinct there about 10,000 years ago.

 References 


Category:Horses
Category:Fossils