Crossword clues for protohippus
protohippus
The Collaborative International Dictionary
Protohippus
Protohippus \Pro`to*hip"pus\, n. [NL., from Gr. ? first + ? horse.] (Paleon.) A genus of fossil horses from the Lower Pliocene. They had three toes on each foot, the lateral ones being small.
WordNet
protohippus
n. Pliocene horse approaching donkeys in size
Wikipedia
Protohippus
Protohippus is an extinct three-toed genus of horse. It was roughly the size of a modern donkey. Fossil evidence suggests that it lived during the Late Miocene and Early Pliocene, from about 14 Ma to 6 Ma.
Analysis of Protohippus' skull and teeth suggests that it is most closely related to the genus Calippus.
Species include:
- P. vetus
- P. perditus
- P. supremus (also P. simus)
- P. gidleyi