T-Rex was a Cretaceous dinosaur. The Jurassic was millions of years earlier. Compsognathus was Jurassic though, so either T-Rex was living out of his era, or he is really something else such as an Allosaurus, which looked pretty similar though they are not closely related.
T-Rex was a Cretaceous dinosaur. The Jurassic was millions of years earlier. Compsognathus was Jurassic though, so either T-Rex was living out of his era, or he is really something else such as an Allosaurus, which looked pretty similar though they are not closely related.