Nannippus

Nannippus is a genus of three-toed horse endemic to North America during the Miocene through Pliocene, about 13.3—3.3 million years ago (Mya), living around 11.1 million years.

Nannippus lived as far south as central Mexico (N. peninsulatus) to as far north as Canada (N. lenticularis), to California in the west, and North Carolina (N. lenticularis) and Florida (N. peninsulatus) in the east.