But T. rex was also the last of its meat-tearing family. The earliest tyrannosaurs evolved about 166 million years ago. In ...

Researchers have identified a "mating arena" at Dinosaur Ridge where male theropods gathered during the Cretaceous period to display in front of females.

Utah Tech University art professor Alex Chamberlain recently hosted a presentation for Panorama Elementary School students, focusing on his life-sized 3D-printed model of a T. rex.