Dinosaurs: T. rex had more powerful jaws than its theropod ancestors

Theropod dinosaurs, including carnivores like T. rex and herbivores like Therizinosaurus, evolved deeper and stronger jaws over the course of the dinosaur age

Dinosaur - Theropods, Extinction, Fossils

A giant crocodile relative had terrifying teeth like a T. rex

If the T. rex is the ancestor of the chicken, is the T-rex a type of bird? - Quora

Tyrannosaurus

Discover T-Rex's Ancestor (With Larger Arms and Gigantic Claws) - A-Z Animals

How Once-Tiny Tyrannosaurs Became Titans - WSJ

How a spinosaur larger than a T-Rex was also a swimmer

T. Rex May Have Traded Big Eyes For Gigantic Jaws

Could T-Rex have used their tiny arms for display feathers? The more I look at Ostriches and Cassowaries, it seems to me that their tiny arms should have had feathers for sexual

T-Rex: Tyrannosaurus Dinosaur Facts and Information

Carcharodontosaurus