A broken T. rex tooth found in another dinosaur's tail bone offers evidence that the king of all meat-eating beasts hunted live prey, US paleontologists said Monday.
But paleontologists have not been able to rule out that T. rex was an opportunistic scavenger, and scientists say the latest research still cannot disprove that theory.What researchers have described in the Proceedings of the National Academy of Sciences, a US journal, is the first discovery of a broken T. rex tooth in another dinosaur bone -- in this case, in the vertebrae of a plant-eating hadrosaur.
http://mobile.france24.com/en/20130715-broken-tooth-dino-tail-proves-rex-was-predator
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