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

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

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

A new study sheds light on how these reptiles become “mummies” and paints a picture of what these ancient animals looked like ...

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

Paleontologists in Argentina have discovered a new predatory dinosaur -- the fossils of which contained a crocodile bone within the dinosaur's mouth.

A pair of Edmontosaurus specimens found in a Wyoming dig help researchers to understand the process that led them to be ...

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, ...

One thing that northwestern New Mexico is known for is lots of dinosaur fossils. Previously, paleontologists estimated that ...

By working with the two mummies, the researchers were also able to determine that Edmontosaurus could likely grow over 40 ...

Argentine paleontologists found a 70-million-year-old dinosaur egg in Río Negro. This rare find is believed to belong to a ...