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

Everything scientists believed about the T-Rex could be wrong after a study proved the existence of its smaller cousin.

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

Nanotyrannus, the “miniature T rex”, has been the centre of one of the fiercest debates in palaeontology. Scientists have ...