|Illustration of Epihippus gracilis skull and teeth|
Epihippus is believed to have evolved from Orohippus, which continued the evolutionary trend of increasingly efficient grinding teeth. Epihippus had five grinding, low-crowned cheek teeth with well-formed crests. A late species of Epihippus, sometimes referred to as Duchesnehippus intermedius, had teeth similar to Oligocene equids, although slightly less developed. Whether Duchesnehippus was a subgenus of Epihippus or a distinct genus is disputed. This is an early species of a horse.
There are three species:
- Epihippus gracilis
- Epihippus intermedius
- Epihippus uintensis
- "Fossilworks: Epihippus". paleodb.org. Retrieved 8 May 2017.
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