Morrison formation

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(Jurassic period)Sauropods: Apatosaurus Diplodocus Supersaurus Barosaurus Kaatedocus Brachiosaurus altithorax Camarasaurus Haplocanthosaurus Amphicoelias Suuwassea Predators: Allosaurus fragilis Torvosaurus tanneri Ceratosaurus nasicornis Saurophaganax maximus Stokesosaurus clevelandi Tanycolagreus Ornitholestes Ornitopods: Camptosaurus Dryosaurus Others:Stegosaurus,Mymorapelta Nanosaurus. Arid subtropical Frequent seasonal rains River valleys, floodplains, dry steppe areas Abundant vegetation during the “wet season”.