Wikipedia
Merychyus
Merychyus is an extinct genus of terrestrial herbivore of the family Merycoidodontidae ( oreodont), endemic to North America during the Oligocene- Pliocene subepochs (24.8—4.9 mya) existing for approximately .
Merychyus was a cud-chewing plant-eater with a short face, tusk-like canine teeth, heavy body, long tail, short feet, and four-toed hooves.