For more than three decades, a small tyrannosaur skull sat at the center of one of paleontology’s most stubborn arguments.

On 12 August 1990, the world's most complete skeleton of a Tyrannosaurus rex was found in South Dakota. Deena Newman speaks ...

It's known as the "Dueling Dinosaurs" fossil: A triceratops and a tyrannosaur, skeletons entangled, locked in apparent combat right up until the moment of their mutual demise. Even in the Hell Creek ...

Billions of Tyrannosaurus rex roamed North America during their fascinating reign as top predators, according to a team of researchers that went about the daunting task of making the calculation.

Tyrannosaurus rex was a late developer who kept growing until the age of 40, reveals new research. The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to ...

A formerly unknown relative of the most iconic of all dinosaurs, Tyrannosaurus rex, has been newly identified, according to a study released Thursday. The revelation adds a new clue that could help ...

Tyrannosaurus rex is often seen as the unstoppable king of the dinosaurs, but life in the Hell Creek ecosystem was far from easy. Massive herbivores like Triceratops, heavily armored Ankylosaurus, and ...

Dinosaurs haven’t roamed the Earth for millions of years, but the nature of their reign has sparked no shortage of controversial debates among paleontologists that remain unresolved today. Late last ...