hipparion
noun
hip·par·i·on
hiˈpa(a)rēˌän,
-ēən
1
capitalized : a genus of extinct Miocene and Pliocene three-toes mammals related to but not now considered direct ancestors of the horse
2
plural -s : any animal or fossil of the genus Hipparion
Word History
Etymology
New Latin, from Greek, pony, diminutive of hippos horse