An argument over whether fossils from several small dinosaurs represent a juvenile Tyrannosaurus rex or smaller adults of a ...

Now a research team said there’s new evidence that resolves the case. The latest clue comes from a complete skeleton — first ...

A new look at the "Dueling Dinosaurs" fossil reveals that Tyrannosaurus rex was not the only tyrannosaur roaming the land.

A new specimen of one of the most controversial species of dinosaur has the potential to overturn decades of research on the ...

Fossils paleontologists initially thought belonged to a juvenile Tyrannosaurus rex actually belong to a new species of ...

Tyrannosaurus rex earned its “Tyrant King” status partly due to its enormous size. An adult T. rex could easily grow over ...

The fossil skull of a mystery tyrannosaur has been the subject of debate since it was discovered in the 1940s.

More than 60 million years on from its final day on Earth, there's a dinosaur we owe an apology. Paleontologists confirm that the Tyrannosaurus rex locked in combat with a Triceratops in the famous ...

Now, a research team says new evidence resolves the case. The latest clue comes from a complete skeleton — first uncovered in ...

A small dinosaur skull found in Montana 40 years ago was thought to be a young T. rex. Turns out it was a smaller, faster ...