Latest on Physics Buzz, The Terrifying T. rex

With a gargantuan head flaunting the largest teeth of any predatory dinosaur, Tyrannosaurus rex embodies the ideal nightmarish horror. So, what was such a ferociously large animal doing with such tiny forelimbs that look more like a humorous afterthought than an evolutionary tool?

“Some people think T. rex forearms are just vestigial organs which evolved away, but I claim no,” said Scott Lee, a professor of physics at University of Toledo, who argues that a T. rex could move its forearms quickly enough to prevent a struggling prey’s escape. Therefore, the arms were an integral part of the predator’s hunting tactics, he said, and not useless stubs.

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