Allosaurus

Allosaurus (al·lo·saur·us, Greek for "Different Lizard"), is arguably one of the most well known Jurassic predators known, growing to about 26 - 33 feet (8 to 10 meters) on average and capable of reaching up to 12–13 meters (up to 43 feet.) long. The predator had a large skull with eye ridges, and claws designed for gripping. Its diet may have included many different dinosaurs, mainly smaller ones such as the Dryosaurus and Camptosaurus, but in packs it may, possibly, have hunted the stegosaurid Stegosaurus, young sauropods, even lonely and/or injured adult Diplodocus. There are currently three species of Allosaurus known: A. fragilis, A. europaeus, A. jimmadseni, and A. Maximus (the largest subspecies). Allosaurus is also known to hunt in packs to kill bigger dinosaurs such as Camarasaurus.