(CNN) -- Was Tyrannosaurus rex a predator or scavenger? The question has been a point of controversy in the scientific community for more than a century. "You see 'Jurassic Park,' and you see T. rex as this massive hunter and killer, as incredibly vicious. But scientists have argued for 100 years that he was too big and too slow to hunt prey and that he was probably a scavenger, an animal that feeds only on dead things," University of Kansas paleontologist David Burnham said. Burnham and researcher Robert DePalma got what Burnham described as his "lucky break" when they found the fossil of a duckbill dinosaur's tail with a tooth in it.
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Some scientists have argued that dinosaur fed only on dead things
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Researchers say fossil of dinosaur tail with tooth in it proves otherwise
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Tyrannosaurus rex was among top feeders, Kansas paleontologist says
But @placeholder was thrilled at what the fossilized bones told him about the life of the duckbill.