Oklahoma State University Center for Health Sciences: Study Reveals the T. Rex Didn't Reach Full-size Until Age 40
January 16, 2026
January 16, 2026
STILLWATER, Oklahoma, Jan. 16 (TNSjou) -- Oklahoma State University Center for Health Sciences issued the following news:
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New study reveals the T. rex didn't reach full-size until age 40
For decades, scientists have been counting annual growth rings, similar to tree rings, found inside fossilized leg bones of Tyrannosaurus rex to estimate how old the giant carnivores were when they died and how quickly they grew to adulthood.
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* * *
New study reveals the T. rex didn't reach full-size until age 40
For decades, scientists have been counting annual growth rings, similar to tree rings, found inside fossilized leg bones of Tyrannosaurus rex to estimate how old the giant carnivores were when they died and how quickly they grew to adulthood.
" . . .