A new study reveals Tyrannosaurus rex took 40 years to reach full size, not 30, as previously thought. Researchers analyzed ...

It took the fearsome T rex 40 years to reach its full size, study finds - Findings extend growth phase of T rex by 15 years ...

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

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

By Will Dunham WASHINGTON, Jan 15 (Reuters) - There is no question that Tyrannosaurus rex got big. In fact, this fearsome ...

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

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

An analysis of growth rings in the leg bones of 17 Tyrannosaurus rex individuals reveals that the dinosaurs matured much more ...

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

There is no question that the Tyrannosaurus rex was big. In fact, it may have been Earth’s biggest land predator of all time.