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

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

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

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

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

Dinosaur bones are like trees—every year is represented by a new ring, and paleontologists can count those concentric circles ...

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

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 ...

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

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

The findings suggest T. rex spent much of its life as a juvenile or subadult, growing quickly in some years and barely at all ...