Fossilized dinosaur bones are still a somewhat common find, mainly because of how long dinosaurs roamed the Earth. What’s far more unheard of, however, is fossilized dinosaur skin. In 2011, archaeologists unearthed a near-complete Borealopelta markmitchelli, a type of four-legged ankylosaur fossil. The fossil preserved some of its spikes, armor, stomach contents and most importantly, the skin on its...

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