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Broken tooth in dino tail 'proves' T. rex was predator

Jul 17, 2013 - 1:46 PM

What researchers have described is the first discovery of a broken Tyrannosaurus rex tooth in another dinosaur bone

T. REX BITE. This undated photo courtesy of David A. Burnham and Proceedings of the National Academy of Sciences (PNAS) shows researchers Robert A. DePalma II (L)and David A. Burnham as they look at a Tyrannosaurus rex tooth crown embedded between hadrosaur vertebrae and surrounded by bone overgrowth. Photo by AFP/David A. Burnham/PNAS