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

It is no secret that the tyrannosaurus rex was one of the largest carnivorous creatures to walk the earth millions of years ...

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

The behemoth dinosaurs grew more slowly and had longer lifespans than previously thought, a new study suggests ...

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of Tyrannosaurus rex to estimate how old the giant carnivores were when they died and ...

Using polarised light, the team identified previously unknown growth marks that had gone undetected in earlier studies. These ...

Previous studies of T. rex growth rings concluded they grew until around the age of 25, and then stopped. This was more of a gradual-slowdown than a sharp halt, but nevertheless, the finding has been ...

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

The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to adulthood than scientists ...

India, Jan. 16 -- For decades, scientists have estimated the age and growth rate of Tyrannosaurus rex by counting annual ...