Scientists believe they now know the true lifespan of the Tyrannosaurus rex, rewriting what was known about the ancient ...

T.rex lived longer and took more time to reach its maximum size than previously thought, according to new research.

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, found inside fossilized leg bones of ...

T rexes grew much more slowly than previously thought, taking several decades to reach their full size of around eight tonnes ...

Study finds Tyrannosaurus rex did not reach full size until age 40 - Nation and World News | Hawaii Tribune-Herald ...

A landmark investigation into Tyrannosaurus rex fossils has fundamentally altered scientific understanding of how long these ...

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

For decades, scientists have estimated the age and growth rate of Tyrannosaurus rex by counting annual growth rings-similar ...