June 18th Loc. 45. New railroad cut in NW¼, sec. 15, T. 19N., R. 29E., Wazpza SE Quad, just east of the RR bridge and causeway across the Grand River. Mobridge member - no section measured - beds dip E about 30 thru western 2/3 of cut, east third has gentle W dip. Lower part of dark gray, slightly calc. sh. with red-brown weathering concretions, scattered or in zones. Upper part consists of similar shale with layers light gray concretions. Limestone which forms small ledges less than one foot thick, and scattered cream to buff colored small calc. concretions - and a few thin beds of greenish bentonite. Above this part lighter gray shale with gray ls concretions-light rims. Spot samples for fossils from beds below shale with ls layers S-1 1 W - from about 5' above grade 60yds E. of Wendcut S-2 ½ W above S-1 S-3 ½ W above S2 S-4 ½ W above S3 S-5 ½ W above S4 In S-1 interval - S. nodosus fetuza with apertural nodes. Fossils: - Beccolites scattered in shale throughout beds in cut - most abundant fossil. A few cephalits - also scattered. Note large nodosus-type 18