In this undated photo, Glenn Storrs, left, helps haul a dinosaur fossil on a contraption made from two hospital gurneys and a motorcycle wheel, dubbed the dino wheel, near Pryor Mountains in Montana. After 10 years of painstakingly unearthing scattered dinosaur fossils at a site along the base of the Pryor Mountains, Storrs believes he has figured out how the bones arrived at their final resting place 145 million to 150 million years ago. (AP Photo/Courtesy of Cincinnati Museum Center via The Billings Gazette)