Pioneering techniques used in this research may soon be applied to other dinosaur fossils and alter the course of ...

Tyrannosaurus rex is arguably the world’s most famous dinosaur, yet paleontologists are still learning more about this giant ...

Tyrannosaurus rex lived longer and took more time to reach its maximum size than previously thought, according to a new study.

There is no question that Tyrannosaurus rex got big. In fact, this fearsome dinosaur may have been Earth's most massive land ...

Now, a new study of 17 tyrannosaur specimens, ranging from early juveniles to massive adults, has revealed that the king of ...

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...

The Tyrannosaurus rex is often shown baring massive, sharp teeth, like the ferocious creature in "Jurassic Park." But new research suggests that this classic image might be wrong. The teeth on T. rex ...

A study of fossil bones shows Tyrannosaurus rex kept growing until around age 40, challenging long-held ideas about dinosaur ...

By cutting into a tiny throat bone, Princeton's Chris Griffin showed that it belonged to an adult of a smaller tyrannosauroid ...

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...