undet. Coleoptera

Geological context: Late Cretaceous, Fox Hills Fm, Trail City Mbr. Collection locality: conc., richly fossiliferous conc zone about 15 ft above large-conc layer, bluffs S of the Moreau River, between the forks of the county roads leading NW to the village and N to the bridge, and about 1 mi SE of Thunder Butte village, Ziebach County, South Dakota, USA. Collected by Ian G. Speden, 1962. IPA.00658: South Dakota. Ziebach County. conc., richly fossiliferous conc zone about 15 ft above large-conc layer, bluffs S of the Moreau River, between the forks of the county roads leading NW to the village and N to the bridge, and about 1 mi SE of Thunder Butte village. [73; 73j]. Coll: Speden, I. G. 1962. Late Cretaceous. Maastrichtian. Fox Hills Fm. Trail City Mbr. Irish Creek Lithofacies. Cucullaea Assemblage Zone.; IP number 42069; lot count 2; accn=IPA.07048.