SKULL





T.rex's skull was large and strong and it could grow to be as large as six feet long. The skull was massively built with fenestrae of small size. The roof of T.rex's skull was almost four inches thick whereas most dinosaurs had light delicate skulls. It had an extra joint in the lower jaw between the dentary and the elements at the back which allowed T.rex to have an increased gape for bitting large prey.