"Natural Copies from the Coal Mines of Central Utah" (1994/95)

"I collaborated with a museum in Utah. It turned out that it was in a coal-mining town. The coal miners would find naturally formed casts of dinosaur tracks in the roofs of the coal mines. Even the paleontological preparator (who made molds for me so I could make the casts in New York) used to work in a coal mine."

-Allan McCollum