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 ...

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 ...

A new analysis of Tyrannosaurus skeletal remains reveals physical differences in the femur, other bones and dental structures across specimens that could suggest Tyrannosaurus rex specimens need to be ...

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 ...