Sifrhippus
| Sifrhippus Temporal range: Ypresian (Wasatchian),
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| Skeleton at the Natural History Museum of Los Angeles County | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Perissodactyla |
| Family: | Equidae |
| Genus: | †Sifrhippus Froehlich, 2002 |
| Species | |
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| Synonyms | |
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Sifrhippus is an extinct genus of equid containing the species S. sandrae. Sifrhippus is the oldest known equid, living during the early Eocene. Its fossils were discovered in the Bighorn Basin of Wyoming.