Class Mammalia, Order Artiodactyla, Suborder Oreodonta, Family Merycoidodontidae, Subfamily Oreodontinae
Geologic Time: Oligocene – (35 million years ago)
Merycoidodon was an oreodont, meaning “mountain tooth”, and were hoofed herbivorous (plant-eating) mammals. Merycoidodon was a quadrupedal ruminant closely related to camels, pigs, and sheep. The skull was elongated and the upper canines were chisel shaped; the cheek teeth were used for grinding. It could reach a length of 4.5 ft long.