Megahippus is an extinct equid genus belonging to the subfamily Anchitheriinae. As with other members of this subfamily, Megahippus is more primitive than the living horses. Fossil remains of Megahippus have been found across the U.S., from Montana to Florida.
* Mikko's phylogeny archive
Source: Wikispecies, Wikipedia: All text is available under the terms of the GNU Free Documentation License