W-3A. Government Cuyon area, bluffs along W side of road connecting with Seely-Alzade road in the sec. 18, T.56 N., R.64 W. The locality is probably in sec. 31, T.57 N., R.64 W., according to Crook Co. road map. Along the bluff a channel sandstone forms massive ledge for distance of about 300', lensing out into silty to sandy clayslones laterally. Ledge is in Lzkotz, at about same position (15-20 feet) below Fall River contact as the friable ss lens in the Gov't Cuyon section. From study clstus, a clstus assoc with the ledge, numerous polished pebbles washing out. Fusulines+ other fossils in some of those. Sent to P+S for possible ident. of source. Also included part of stromatoporoid?