
Hipparion (Greek, `pony`) is an extinct genus of horse living in North America, Asia, Europe, and Africa during the Miocene through Pleistocene ~23 Mya—781,000 years ago, existing for 22 million years. Its habitat or biome would be that of non-forested, grassy plains, shortgrass prairie or steppes. ==Taxonomy== Hipparion was named by de Christ.....
Found on
http://en.wikipedia.org/wiki/Hipparion

• (n.) An extinct genus of Tertiary mammals allied to the horse, but three-toed, having on each foot a small lateral hoof on each side of the main central one. It is believed to be one of the ancestral genera of the Horse family.
Found on
http://thinkexist.com/dictionary/meaning/hipparion/
Hip·pa'ri·on noun [ New Latin , from Greek ... a pony, dim. of ... a horse.]
(Paleon.) An extinct genus of Tertiary mammals allied to the horse, but three-toed, having on each foot a small lateral hoof on each side of the main central one. It is believed to be one of the ancestral genera of...
Found on
http://www.encyclo.co.uk/webster/H/47

The Hipparion was a fossil genus of the horse family, of the Upper Miocene and Pliocene periods. The members are distinguished by the fact that each foot possesses a single fully-developed toe, bordered by two functionless toes which do not touch the ground, but simply dangle on each side of the central toe. The hipparion was about the size of an a...
Found on
http://www.probertencyclopaedia.com/browse/BH.HTM
No exact match found.