Paleontology curator Kirk Johnson of the Denver Museum of Nature Science right and Intern Erin Steele prepare to remove a Triceratops rib from the...
{"Image ImageDescription": "Paleontology curator Kirk Johnson of the Denver Museum of Nature & Science, right, and Intern Erin Steele prepare to remove a Triceratops rib from the face of a ledge along West Bijou Creek some 35 mile east of Denver. Part of the Denver Basin Project is focused on finding the K-T boundary, the layer of irradium-rich soil that came from the meteor impact in Mexico that led to the dinosaurs' extinction 65 million years ago.  (Photo By Craig F. Walker/The Denver Post via Getty Images)"}