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What is "eohippus"

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eohippus
The Collaborative International Dictionary
eohippus

eohippus \eo*hip"pus\ ([=e]`[-o]*h[i^]p"p[u^]s), n. [Gr. 'hw`s dawn + "ipposhorse.] an extinct primitive dog-sized 4-toed Eocene mammal, the earliest horse known in the line of descent of the modern horse. It is classed in the extinct genus Hydracotherium. Called also dawn horse.

Syn: dawn horse.

Douglas Harper's Etymology Dictionary
Eohippus

oldest known genus of the horse family, about the size of a fox and first known from fossil remains found in New Mexico, 1879, Modern Latin, from eo- "earliest" + Greek hippos "horse" (see equine).

Wiktionary
eohippus

n. extinct early Eocene mammal, ''Hyracotherium leporinum''

WordNet
eohippus

n. earliest horse; extinct primitive dog-sized 4-toed Eocene animal [syn: dawn horse]

Wikipedia
Eohippus

Eohippus is an extinct genus of small equid ungulates. The only species is E. angustidens, which was long considered a species of Hyracotherium. Its remains have been identified in North America and date to the Early Eocene ( Ypresian) stage.

Usage examples of "eohippus".

But what gained greatest attention, especially from ranchers in the west, was his discovery in subsequent years of handsome skeletons of four of the progenitors of the horse: eohippus, mesohippus, miohippus and the crucial, determinative merychippus.