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

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

A group of researchers has estimated how long it took Tyrannosaurus rex to reach its full size — and the time period is ...

Tyrannosaurus rex lived longer and took more time to reach its maximum size than previously thought, according to a new study. Scientists have long counted annual growth rings in fossilized ...

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

It turns out the mighty T. rex wasn't always so mighty! New research is shedding light on how long it took the "king of the ...

It is no secret that the tyrannosaurus rex was one of the largest carnivorous creatures to walk the earth millions of years ago, but a new study suggests it may have taken the predator decades to ...

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

Tyrannosaurus rex was a late developer who kept growing until the age of 40, reveals new research. The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to ...

By counting visible and hidden rings, researchers found that T. rex did not reach full size until 35 to 40 years of age.