At the twilight of the age of dinosaurs, an agile and vicious predator named Nanotyrannus prowled western North America, ...

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

Palaeontologists have argued for decades over whether certain fossils are young Tyrannosaurus rex or another species entirely ...

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

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

What if everything we know about T. rex growth is wrong? A complete tyrannosaur skeleton has just ended one of paleontology's ...

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

Jane, the dinosaur fossil housed at Rockford's Burpee Museum of Natural History, may not be a Tyrannosaurus rex as previously ...

There are literally decades of research... based on a premise that this article overturns,” said one paleontologist.

Specifically, whether or not certain fossils found in Montana belonged to a young Tyrannosaurus rex or a completely separate, ...

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 ...