Red Gulch Dinosaur Tracksite is an assemblage of fossil dinosaur footprints discovered in 1997 on public land near Shell, Wyoming by Erik P. Kvale, a research geologist from the Indiana Geological Survey. The tracks are believed to have been made during the Middle Jurassic Period, 160-180 million years b.p., on what was then a shore of the Sundance Sea. Theropod tracks are thought to be among those discovered, but evidence suggests that the tracks were made by a large, diverse group of dinosaurs.