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Tyrannosaurus

Tyrannosaurus is a large North American theropod, and the last known tyrannosaurid living before the end-Cretaceous extinction event. One of the largest land carnivores of all time, Tyrannosaurus grew to about 12 m long, weighing up to 9 t. The massive skull bones were fused and pneumatized, allowing for an extremely powerful bite. The tip of the snout was U-shaped, which increased the amount of tissue a tyrannosaur could bite off its prey. The skull of Tyrannosaurus was wide at the rear but had a narrow snout, allowing unusually good binocular vision. It was likely both an active predator and a scavenger, but the specifics of its feeding behavior and lifestyle are still debated.