The group was later traced to the greater Green River Basin, the Uintah and Piceance Basins, the Bighorn Basin, the Front Range, the Zuni Basin, the Wasatch Plateau, Wind River Basin, Washakie Basin, and the Powder River Basin. It is spectacularly exposed along the Book Cliffs of eastern Utah and western Colorado. With the recognition of the vast extent of the group, the group has been divided into formations by region, with the original Point Lookout Sandstone, Menefee Formation, and Cliff House Sandstone being restricted largely to the San Juan Basin and the Madrid, New Mexico area.
