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 ...

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.

One Tyrannosaurus rex seems scary enough. Now picture 2.5 billion of them. That’s how many of the fierce dinosaur king probably roamed Earth over the course of a couple million years, a new study ...

Despite films like "Jurassic Park" depicting Tyrannosaurus rex as nothing more than a stupid killing machine, Dr. Suzana Herculano-Houzel believes the mighty dinosaur "deserves better." By analyzing ...

Tyrannosaurus rex was a fearsome creature: 12 feet tall, 40 feet long, weighing over 10,000 pounds, with razor-sharp teeth as big as bananas and a bone-crushing bite force. It would eventually become ...

What color were the dinosaurs? Watching the Jurassic Park movies, the answer seems clear: gray, brown or, at best, dull green. In a new book, British paleontologist David Hone dryly asks: "Has there ...

When we think of dinosaurs, fierce giants like Tyrannosaurus rex (T. rex) or long-necked sauropods usually come to mind.

It is the most famous dinosaur of all time, as long as a school bus, weighing more than 5 tons, with a mouth full of razor-sharp teeth. Scientists know a lot about the Tyrannosaurus rex — the star of ...