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Fossilized evidence of a tumor in a 255-million-year-old mammal forerunner


December 8, 2016

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Paleontologists at the University of Washington report that an extinct mammal relative harbored a benign tumor in its jaw made up of miniature, tooth-like structures. The tumor, a compound odontoma, is common to mammals today. But this animal lived 255 million years ago, before mammals even existed.Full Story

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University of Washington

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