The Devonian in Colorado, US

Paleontology and geology

A shallow sea covered much of the area during this time interval, and a number of Devonian formations are exposed along the flanks of the Rockies. These rocks are generally poor in fossils, but exposures near Ouray in southwestern Colorado contain a well-studied marine fauna, including brachiopods and other fossils typical of shallow tropical seas. Limy sediment was deposited on the floor of this sea across the state.