The Tyrannosaurus rex ("T-Rex") is perhaps the most well-known dinosaur species. Its formidable stature, sharp teeth, and hunger for meat have made it a favorite dinosaur to depict in stories, movies, ...

A massive predator once roamed the Earth, towering over its rivals and casting a long shadow on the ancestors of T. rex. This giant, now known as Ulughbegasaurus, ruled the prehistoric world around 90 ...