Named as the upper member (of three members) of the Cloverly formation for exposures around Little Sheep Mountain between the towns of Himes and Lovell, Big Horn Co, WY in Bighorn basin. Type section measured on west flank of Little Sheep Mountain in sec 15, T55N, R95W where member is 92 ft thick, and overlies Little Sheep mudstone member (new) of Cloverly and underlies Sykes Mountain formation (new). Mapped from Red Dome, Carbon Co, MT in the Bighorn basin south to near Big Horn Co line in WY and north around Little Sheep Mountain. Lower contact is a friable sandstone (Himes) on bentonitic mudstone (Little Sheep). Upper contact is variegated claystone (Himes) with brown siltstone (Sykes Mountain). Consists of cliff-forming, variegated (brown, gray, red) mudstone and claystone, lenticular, cross-bedded, olive gray sandstone of feldspar with a matrix of mud that smells when wet, and shoestring, channel-fill, clean, medium- to fine-grained, cross-bedded quartz sandstone. Channels range from a few yds to 1 mi wide, 100 ft maximum thickness. No fossils found. Age of Early Cretaceous assigned on basis of stratigraphic position. Nomenclature chart. Cross section.

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