| Protohippus Temporal range: late Miocene |
|
|---|---|
| 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 genus of horse.[1]