The Dilophosaurus was one after the Compsognathus and the Velociraptor of the fastest prehistoric lizards. Despite its six meter length, it weighed He only weighed 500 kg and had long, strong hind legs with which he effortlessly reached speeds of up to 38 km/h. On his He had two striking bone crests on his skull, which also gave him his name “Two-crested lizards”. Although they were tall and long, they were too thin to to defend yourself with it. Scientists believe they can served to impress rivals. A crocodile has the same typical Notch in the upper jaw like the Dilophosaurus.