Eohippus

(redirected from eohippuses)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to eohippuses: Daedal

Eohippus

the oldest known ancestor of the horse. A short, 25-50 cm high, rodent-like animal with four toes on each forefoot and three on each hind. Each toe had a hoof. The Eohippus survived by its speed. See also mesohippus.