The roster of dinosaurs from the Morrison is impressive. Among the theropods, "Allosaurus", "Saurophaganax", "Torvosaurus", "Ceratosaurus", "Coelurus", "Ornitholestes", "Tanycolagreus", "Stokesosaurus", and "Marshosaurus" are found in the Morrison. An abundance of sauropods has been found there, including "Apatosaurus", "Diplodocus", "Barosaurus", "Brachiosaurus", "Camarasaurus", and "Amphicoelias", which is possibly the largest known dinosaur ever to exist. Two genera of stegosaurs, "Stegosaurus" and "Hesperosaurus", have been found there. Finally, ornithopods found in the Morrison include "Dryosaurus", "Camptosaurus", "Drinker", "Othnielia", and "Othnielosaurus".