A deer-sized T. rex ancestor shows how fast tyrannosaurs became giants

The newly discovered fossil’s name, Moros intrepidus, means ‘the harbinger of doom’

A new dinosaur shows that even Tyrannosaurus rex had humble beginnings. ...

Original Article: https://www.sciencenews.org/article/t-rex-ancestor-shows-how-fast-tyrannosaurs-became-giants