Ammosaurus (IPA: /ˌæməˈsɔɹəs/; "sand lizard") is a genus of sauropodomorph dinosaur from the Early Jurassic Period of North America. At 4 meters (13 feet) in length, it was small compared to some other members of its suborder, which included the largest animals ever to walk the Earth. It was a versatile animal, able to move both bipedally and quadrupedally, and may have been omnivorous.