An extinct genus of small horse-like mammals that lived during the early Eocene epoch, about 50 million years ago.
From epi- (upon, after) + Greek hippos (horse); named to indicate it was a successor to or early form related to horses in evolutionary history.
Epihippus was tiny—only about 2 feet tall and weighing 50 pounds—but it's a crucial link showing how modern 6-foot horses evolved from dog-sized ancestors over millions of years.
Complete word intelligence in one call. Free tier — 50 lookups/day.