Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or ...

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

Paleontologists have examined an exceptionally well-preserved, near somatically mature tyrannosaur skeleton from the Hell Creek Formation of Montana.

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

Remains of dinosaur ‘mummies’ found 100 years ago in Wyoming still have skin and hooves, researchers say - The skeletons of ...