Speed:Very fast, 40-43 mph
Range:Alaska, Alberta to New Mexico
Name meaning:Gorgon Lizard
Gorgosaurus was slender and fast. Its legs were longer and had more power than the ones of T. rex. It was a few feet smaller than T. rex but more agile and faster.
Gorgosaurus was related to T. rex, but more closely related to Albertosaurus. It is one of the Big Tyrannosaurs. Along with Albertosaurus, Gorgosaurus was called the cheetah of the Cretaceous. Gorgosaurus lived alongside Albertosaurus, Daspletosaurus and Tyrannosaurus Rex, so these animals may have gone into combat. As Gorgosaurus and Albertosaurus were so similar, in the 1970s, a study of tyrannosaurs indicated that these two species were to same. But in 1981, another study showed that there were differences between the two and the name was reinstated.