Oxytoma (Hypoxytoma) nebrascana
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
Geological context: Late Cretaceous, Fox Hills Fm, Trail City Mbr. Collection locality: various layers in road cut on E side of spur and on W side of old US 12 about .75 mi S of intersection with Wakpala road, N side of hill with Ridgeview 1954 bench mark, and 4.5 mi S of Mahto, Corson County, South Dakota, USA. Collected by Karl M. Waage, George Colton, 1949. IP number 562135; lot count 1; taphonomy=concretion; accn=IPA.07048; associatedwith=IP.563031,IP.563015,IP.563016,IP.563017,IP.563018,IP.563019,IP.563020,IP.563021,IP.563022,IP.563023,IP.563024,IP.563025,IP.563026,IP.563027,IP.563028,IP.563029,IP.563030,IP.563032,IP.563033,IP.563034,IP.563035.
Yale Peabody Museum’s own description