Mollusca

Geological context: Late Cretaceous, Pierre Sh, Kara Bentonitic Mbr. Collection locality: conc horizon, top of Kara Bentonite, in Brewster Draw downstream from (ie stratigraphically higher than) loc. B1170, & 2.4 mi NE of Redbird, Niobrara County, Wyoming, USA. Collected by Karl M. Waage, Neil H. Landman, Ellen M. Wright, John Kurtz, 1983-07-19. IP number 315659; lot count 1; taphonomy=concretion; accn=IPA.07133; associatedwith=on same slab: IP.315659,IP.315660,IP.315661,IP.315662,IP.315663,IP.315664,IP.315665,IP.315666,IP.315667,IP.315668,IP.315669,IP.315670,IP.315671,IP.315672,IP.315673,IP.315674,IP.315675,IP.315676,IP.315677,IP.315678,IP.315679,IP.315680,IP.315681,IP.315682,IP.315683,IP.315684,IP.315685,IP.315686,IP.315687,IP.315688,IP.315689,IP.315690,IP.315691,IP.315692,IP.315693,IP.315694,IP.315695,IP.315696,IP.315697,IP.315698.