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

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

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 ...

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

New research shows Tyrannosaurus rex took nearly 40 years to reach full size, 15 years longer than previously believed, ...

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

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

Researchers now identify the "dueling dinosaur" tyrannosaur as an adult Nanotyrannus, not T. rex. "This fossil...flips decades of T. rex research on its head," says Lindsay Zanno. Study reveals ...

By cutting into a tiny throat bone, Princeton's Chris Griffin showed that it belonged to an adult of a smaller tyrannosauroid ...