What can you learn about ancient creatures from the fossils they have left behind? Find out how scientists discover millions-of-years-old dinosaur fossils in the field, bring them back to the Museum, and study them in the laboratory. In this Google Virtual Field trip, renowned paleontologist Mark Norell leads a behind-the-scenes tour of the Museum Paleo Prep Lab. This is where real discoveries are made, as experts extract fossils from rock and examine the evidence to determine what kind of dinosaur it was and how it might have lived.