A detective or a hunter wants to find fresh footprints. But Martin Lockley, is interested in tracks that are millions of years old. The paleontologist has collected fossil tracks in Colorado and around the globe for 30 years. He’s amassed one of the most diverse collections in the world. Now, it’s moving from Denver to the University of Colorado Museum of Natural History in Boulder. Ryan Warner speaks with Martin Lockley about fossil tracks.

[Photo: Courtesy of Martin Lockley]