
• (n.) An extinct Miocene mammal of the Horse family, closely related to the genus Anhithecrium, and having three usable hoofs on each foot.
Found on
http://thinkexist.com/dictionary/meaning/miohippus/

genus of extinct primitive horses that originated in North America during the middle Oligocene epoch (36.3 to 23.7 million years ago). Miohippus ... [1 related articles]
Found on
http://www.britannica.com/eb/a-z/m/98
Mi`o·hip'pus noun [ New Latin , from Greek
mei`wn less +
'ippo`s horse.]
(Paleon.) An extinct Miocene mammal of the Horse family, closely related to the genus
Anhithecrium , and having three usable hoofs on each foot.
Found on
http://www.encyclo.co.uk/webster/M/71

Miohippus A genus of prehistoric horse that lived in what is now North America during the Oligocene Period some 25 to 40 million years ago and having three usable hoofs on each foot.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1315/2
No exact match found.