Dinosaur bones are like trees—every year is represented by a new ring, and paleontologists can count those concentric circles to determine a fossil’s age. Previous estimates put T. rex’s lifespan at ...

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

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 ...

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

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

Using polarised light, the team identified previously unknown growth marks that had gone undetected in earlier studies. These ...

T rexes grew much more slowly than previously thought, taking several decades to reach their full size of around eight tonnes, a comprehensive new fossil study revealed. Until now, researchers counted ...

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 ...

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 ...

A recent study reveals that the Tyrannosaurus rex dinosaur grew more slowly and lived longer than previously believed, altering our understanding of this iconic species.