allosaurus and omeisaurus dinosaurs

allosaurus animal behemoth biped bird birds bull carnivore carnivorous china claws creature dinosaur dorygnathus eater era evolution extinct extinction flight flying fragilis herbivore herbivorous history jurassic lizard meat mesozoic natural nature omeisaurus organism paleontology predator prehistoric prey primeval primitive pterodactyl pterodactylus pterosaur reptile sauropod species talon teeth themes theropod tianfuensis titanosaurus vertebrate vicious wing