A small dinosaur skull found in Montana 40 years ago was thought to be a young T. rex. Turns out it was a smaller, faster ...

By Will Dunham WASHINGTON (Reuters) -At the twilight of the age of dinosaurs, an agile and vicious predator named ...

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

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

Debate kicked off in 1988 when a single small tyrannosaur skull discovered four decades earlier was given its own species name: Nanotyrannus lancensis. It carried some features which differed from T.

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 new species is called Nanotyrannus. Compared to the well known tyrannosaurus rex, a nanotyrannus was more speedy and ...

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

LONDON --Tyrannosaurus rex was a slowpoke. That is the conclusion drawn from the latest research by scientists at the University of Manchester in England, whose study flies in the face of decades of ...

Tyrannosaurus rex is one of the few dinosaurs that has its full scientific name in wide use, largely because that name is so cool. But now we might have a few others to learn, as analysis of known ...

For a Tyrannosaurus rex, there was nothing more dangerous than another Tyrannosaurus rex. From a relatively young age these dinosaurs tussled by biting each other on the face—possibly spreading ...

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