A histological thin section of the gorgonopsid lower jaw of a saber-tooth mammal-like beast that prowled Tanzania 255 million years ago, taken near the top of the canine root showing the cluster of ... more 
A histological thin section of the gorgonopsid lower jaw of a saber-tooth mammal-like beast that prowled Tanzania 255 million years ago, taken near the top of the canine root showing the cluster of small circles, indicative of compound odontoma. Courtesy of Chistian Sidor/Megan Whitney/Handout via REUTERS less 
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Reuters | Photo By HANDOUT / Reuters
Thu, Dec 8, 2016 8:02 PM EST