Megahippus

Megahippus (Greek: "great" (mega), "horse" (hippos) ) 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. It was a very large member of the group Anchitheriinae, at 266.2 kg in body mass. Fossil remains of Megahippus have been found across the U.S., from Montana to Florida.