Revised as an informal unit and assigned to the upper part of the newly named Fairpoint Member, lower member of Fox Hills Formation in Meade Co, SD, Williston basin. Locally is more than 140 ft thick. Is 11 ft thick at type measured section of Fairpoint where it overlies an unnamed lower Fairpoint and disconformably underlies the newly named White Owl Creek Member of Fox Hills. Is as much as 50 ft thick in report area. Variability of thickness attributed to increased thickness of intercalated sandstone beds. Coal facies is hard, blocky to fissile, red-brown lignite, brown peat-clay, and black carbonaceous shale with lenses of gray to yellow, fine- to medium-grained dirty sand[stone]. The lignite and the carbonaceous shale intergrade abruptly within a short distance. OPHIOMORPHA found throughout facies. Of Late Cretaceous, Maestrichtian age. Mapped (geologic map). Columnar sections.

Source: GNU records (USGS DDS-6; Denver GNULEX).