The most notable characteristic of this 18-metre-high, carnivorous dinosaur was a long line of spines connected by skin along its back.
This dangerous carnivore weighed several tons and could be up to 17 metres long! The Spinosaurus had many sharp, straight teeth in a crocodile-like mouth. His meals usually consisted of other dinosaurs or fish. The smartly designed sail on his back fulfilled several functions. It probably helped the cold-blooded dinosaurs to vital temperature regulation by collecting or distributing heat. It also served to impress potential mating partners.
This dinosaur with a crocodile-like head probably fed on fish and carrion.