Allosaurus (meaning “Other reptile”) was one of the largest carnivores of the Jurassic period. Running on two muscular, bird-like legs, Allosaurus preyed upon the large herbivores of the period, including large sauropods and smaller plant eaters. It may have been a pack hunter, possibly lying in wait to ambush prey.
The forelimbs were short but muscular, each of the three fingers tipped with a sharp curved claw up to 25cm (10 inches) long for holding prey.
The powerful jaws were lined with over seventy sharp 8cm (3 inch) long teeth. Movable joints and elastic ligaments in Allosaurus’s jaw and skull flexed to help the teeth tear and slice through the prey. The flexible jaws stretched widely to allow the creature to swallow large mouthfuls of flesh.