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

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

Dr Holly Ballard and her team at Oklahoma State University studied leg bones from 17 different T.rex fossils to get a better ...

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

A new analysis reveals Tyrannosaurus rex reached its full size only after four decades, overturning previous estimates and ...

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 ...

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