A new analysis of a fossil unearthed in 2006 provides a fresh line of evidence that a separate tyrannosaur lineage called ...

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

At the twilight of the age of dinosaurs, an agile and vicious predator named Nanotyrannus prowled western North America, resembling a smaller version of Tyrannosaurus – about a tenth the body mass – ...

Debate kicked off in 1988 when a single small tyrannosaur skull discovered four decades earlier was given its own species ...

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 ...

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

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

Tyrannosaurus rex earned its “Tyrant King” status partly due to its enormous size. An adult T. rex could easily grow over ...

Simulations calculated Tyrannosaurus speed from the motion of its swaying tail, finding that the massive dinosaur was a ...

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 ...

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 ...

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 ...