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

In what might be the coolest solution to "how to find fossils", a new study has revealed how we can take to the skies when ...

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

Scientists have long debated whether a mysterious dinosaur excavated in the 1940s was a young T. rex or a distinct species.

Paleontologists spotted injuries on the tails of duck-billed dinosaur fossils that might have occurred during mating.

Scientists have discovered a new dinosaur with powerful claws, feasting on an ancient crocodile bone ... In a new study, ...

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

A Montana fossil reveals that Nanotyrannus, once thought to be a young T. rex, was actually a full-grown predator and it's ...

Nano Tyrannus lancensis was first identified in the 1940s but later largely dismissed by the paleontological community as ...

One of two new plant-eaters found in Utah, the species has shaken up a branch of the dinosaur family tree, a new study says.

For many years, paleontologists have debated about whether there was a smaller relative of the Tyrannosaurus rex, or if those ...