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

The prehistoric Tyrannosaurus rex didn’t balloon to its massive size as quickly as scientists once believed. Instead, the ...

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

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

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

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

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

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

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