After 10 years of painstakingly unearthing scattered dinosaur fossils at a site along the base of the Pryor Mountains, Glenn Storrs believes he has figured out how the bones arrived at their final resting place 145 million to 150 million years ago.
Petrified dinosaur skin is revealed in a fossil from the Mother's Day site in Carbon County.
Tarps helped shade workers as they dug up the dinosaur fossils using everything from hammers to dental picks.
This map shows the distribution and orientation of bones at the Mother's Day site. The lines mark 1-meter squares.
Cincinnati Museum Center field school volunteers helped remove, clean and catalog bones at the site over a period of 11 years.
Glenn Storrs, left, helps haul a dinosaur fossil on a contraption made from two hospital gurneys and a motorcycle wheel, dubbed the dino wheel.
When Kristi Curry Rogers was in second grade, she read a science article about fossilized dinosaur eggs that had been found in Montana. The story intrigued her so much that she was inspired to become a dinosaur expert.