There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet ...

Tyrannosaurus rex might be the most feared dinosaur to ever walk the Earth, but there was once another T. rex that terrorised ...

A new study has found that the T. rex's arms evolved to become smaller at the same time as its head grew to catch more prey ...

Just when you thought it was safe to go back in the water, scientists have discovered a giant, bus-size sea predator that was ...

A new study explores the reason why the dinosaur T. rex has tiny arms.

A fossil discovered in New Mexico could rewrite the history of dinosaurs by revealing a giant tyrannosaur that predates T.

Dinosaurs haven’t roamed the Earth for millions of years, but the nature of their reign has sparked no shortage of controversial debates among paleontologists that remain unresolved today. Late last ...

It’s known as the “Dueling Dinosaurs” fossil: A triceratops and a tyrannosaur, skeletons entangled, locked in apparent combat right up until the moment of their mutual demise. Even in the Hell Creek ...

Is a mysterious, small tyrannosaur fossil from Montana just a juvenile? Or did tiny tyrannosaurs once walk the Earth? New research published in the journal Nature on October 30 offers evidence that ...