Mary Kippus
Merichepus is a species of extinct fossil horses found in strata about 8 million years ago, about 20 million years ago, from the Miocene to the Pliocene. There were three toes, but it was degenerated in more evolved subspecies. Merichepus is differentiated into 19 subspecies, and one of these varieties has various horses such as Hyperion and Flio hippus.