Protohippus
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Protohippus Temporal range: late Miocene |
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| Protohippus simus skeleton | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Perissodactyla |
| Family: | Equidae |
| Subfamily: | Equinae |
| Tribe: | Equini |
| Genus: | 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:
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