| They do still have two skeletons of Tarbosaurus, a theropod dinosaur related to Tyrannosaurus rex. |
| The radiation of birds from the theropod stem may be an example of this sort of thing. |
| New theropod integumental structures have been repeatedly dismissed as connective tissues, such as frayed collagen fibers or ossified tendons. |
| Birds, close cousins of pterodactyls, are believed to have evolved from theropod dinosaurs about 150 million years ago. |
| In the Mesozoic top predators included the biggest theropod dinosaurs on land, and pliosaurs and mosasaurs in the seas. |
| His work provided strong, compelling support for the theory that birds are theropod dinosaurs. |
