Allosaurus
Allosaurus averaged 8.5 metres (28 ft) in length, though some remains suggest it could reach over 12 meters (39 ft). Its three-fingered forelimbs were smaller than its large hind legs, and the body was balanced by a long, heavy tail. It weighed 2.3 tons. Allosaurus teeth were around 2.7-3.0 inches long this made it a scary ferocious pretator.