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

The Nanotyrannus's small skull has been the source of debate among dinosaur experts for at least four decades, according to ...

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

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

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

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 ...

A fossil of two dinosaurs locked in battle shows the smaller of the pair wasn’t a young T. rex but a full-grown predator of ...

A remarkably complete tyrannosaur specimen, unearthed in the middle of Montana, may finally settle one of the most contentious debates in palaeontology and upend our understanding of Tyrannosaurus rex ...

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

More than 60 million years on from its final day on Earth, there's a dinosaur we owe an apology. Paleontologists confirm that the Tyrannosaurus rex locked in combat with a Triceratops in the famous ...

The Nanotyrannus genus has been debated for decades, with some paleontologists arguing that specimens thus classified are ...