Scientists say there’s new evidence that settles the origins of a mysterious dinosaur excavated in the 1940s. Researchers have long debated whether a dinosaur skull found in Montana decades ago ...

"The fossil, part of the legendary 'Dueling Dinosaurs' specimen unearthed in Montana, contains two dinosaurs locked in ...

Researchers say they have uncovered a case of mistaken identity and found evidence of a species called Nanotyrannus lancensis.

The debate over Nanotyrannus’ identity is finally over. A remarkably preserved fossil proves it was a mature species, not a teenage T. rex. This discovery rewrites how scientists understand ...

For many years, paleontologists have debated about whether there was a smaller relative of the Tyrannosaurus rex, or if those smaller fossils were really just awkward teenage versions of the king of ...

The Dueling Dinosaurs fossil contains two dinosaurs preserved together in a potential predator-prey encounter.

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

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

By Stephen Beech T. rex's story has been turned on its head by a new discovery about one of the world's most famous fossil ...