CNN  —  The phrase “leave no stone unturned” has taken on new meaning for paleontologists at the Denver Museum of Nature and Science who discovered a special fossil hidden right under their noses — beneath the museum’s parking lot. The dinosaur bone came to light in January during a drilling project to study the layers of rock underneath the site, the museum announced on July 9. The team had planned to pull an Earth core sample, a long cylindrical piece of rock or sediment, and came across a