Fossilized evidence of a tumor in a 255-million-year-old mammal forerunner
Thursday, December 8, 2016 - 13:01
in Paleontology & Archaeology
An extinct mammal relative harbored a benign tumor made up of miniature, tooth-like structures, paleontologists report. The tumor, a compound odontoma, is common to mammals today. But this animal lived 255 million years ago, before mammals even existed.