Red Gulch Dinosaur Tracksite

[1] They were discovered in 1997 by Erik P. Kvale, a research geologist from the Indiana Geological Survey.

[1] The fossilized 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.

[4][better source needed][5] Due to a rarity of Middle Jurassic theropods, the species that made the tracks is currently unknown.

[1] Besides the trackways, a variety of fossils can be found, including belemnites, crinoids, and shrimp burrows.

Indeed, the layer just above the tracksite contains abundant marine fossils including numerous Gryphaea nebrascensis, indicating that later in the Jurassic it was once again submerged.