A new study reveals Tyrannosaurus rex took 40 years to reach full size, not 30, as previously thought. Researchers analyzed bone tissue from fossils to determine their results.

Tyrannosaurus rex lived longer and took more time to reach its maximum size than previously thought, according to a new study. Scientists have long counted annual growth rings in fossilized ...

It is no secret that the tyrannosaurus rex was one of the largest carnivorous creatures to walk the earth millions of years ...

The behemoth dinosaurs grew more slowly and had longer lifespans than previously thought, a new study suggests ...

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of Tyrannosaurus rex to estimate how old the giant carnivores were when they died and ...

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

India, Jan. 16 -- For decades, scientists have estimated the age and growth rate of Tyrannosaurus rex by counting annual growth rings-similar to those found in trees-preserved inside fossilized leg ...

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.

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