New study adds to contentious debate about when, where, and how the massive dinosaur evolved.

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

Being better able to tolerate cooler temperatures than their rivals, tyrannosaurs grew larger to become the apex predators of ...

A new research shows that the Tyrannosaurus rex’s direct ancestor migrated from Asia over 70 million years ago. Even though ...

Somewhere in a lab, a Tyrannosaurus rex is being brought back to life—not as a living, breathing beast, but as a handbag ...

Tyrannosaurus rex is objectively the most famous prehistoric animal known to science - popular amongst researchers, paleontology enthusiasts, children, and the media alike. What makes this dinosaur so ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the ...

Fossils of the T. rex, tyrant lizard and queen of the dinosaurs, are found exclusively in North America. Strangely, they have ...

A new study suggests that ancestors of the Tyrannosaurus rex migrated from Asia to North America 70 million years ago. Here's ...

Tyrannosaurus rex evolved in North America, specifically in Laramidia, the western half of the continent.

A new study based on mathematical modeling weighs in on the fierce debate among paleontologists over the origins of the king ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study.