Fossil analysis changes what paleontologists know about how long T. rex took to grow full size

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

T. rex took 40 years to become fully grown

An analysis of growth rings in the leg bones of 17 Tyrannosaurus rex individuals reveals that the dinosaurs matured much more ...
IFLScience on MSN

T. Rex Was Still Growing At 40, Taking A Slower Path To Adulthood Than Previously Thought

Previous studies of T. rex growth rings concluded they grew until around the age of 25, and then stopped. This was more of a ...