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

A new dome-headed dinosaur species was discovered in Montana, a study released this month shows. Researchers discovered the ...

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

For decades, paleontologists debated whether fossils were of a young T. rex or a species called nanotyrannus. A new study ...

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

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

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

The Nanotyrannus's small skull has been the source of debate among dinosaur experts for at least four decades, according to the paper. Earlier research suggested it belonged to a young T. rex, but ...

“The fossil, part of the legendary ‘Dueling Dinosaurs’ specimen unearthed in Montana, contains two dinosaurs locked in prehistoric combat: a Triceratops and a small-bodied tyrannosaur. That ...

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

A long-standing paleontological mystery may finally be resolved. Scientists have discovered a fossilized skeleton in Montana ...