Century Dictionary and Cyclopedia
- n. A genus of fossil horses of the family Equidæ, founded by Leidy in 1858 upon remains from the early Pliocene of North America.
GNU Webster's 1913
- n. (Paleon.) A genus of fossil horses from the Lower Pliocene. They had three toes on each foot, the lateral ones being small.
- n. Pliocene horse approaching donkeys in size
Sorry, no example sentences found.
These user-created lists contain the word ‘protohippus’.
Excuse our dust while we renovate to serve you better.
Looking for tweets for protohippus.