Spinosaurus

A predator that reached 16 meters in length, weighing up to 12 tons. The longest skull of the species, but the main distinguishing feature is its spine: A kind of "sail", with its shape and size, formed by the outgrowths of the dorsal and caudal vertebrae. Two giant fangs protruding in the front part of the jaw, deeper are several large canines, and many straight teeth for grinding food. Its varied diet included not only fish, but also birds, mammals, and possibly other dinosaurs. Mostly moved on two hind legs, less often on four: when coming out of the water, for stability.