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 ...
Add Yahoo as a preferred source to see more of our stories on Google. Tyrannosaurus rex lived between about 80 million and 66 million years ago. - Roger Harris/Science Photo Library/Getty Images ...
See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The study, published in PeerJ on Wednesday, analyzed bone samples from ...
Tyrannosaurus rex may have taken far longer to grow up than scientists once thought. By analyzing growth rings in fossilized leg bones from 17 tyrannosaur specimens and using new statistical methods, ...
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