Kingdom: Animalia
Phylum: Chordata
Class: Archosauria
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Prosauropoda
Family: Plateosauridae

A herbivorous dinosaur. Discovered by Marsh in Connecticut, only the posterior portion of the specimen was saved; the anterior portion (in a block of sandstone) apparently got used to construct a bridge. Ammosaurus could either be biped or quadruped. It was about four meters long with strong claws and long and large hands.