undet. Coleoptera
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: Drepanochilus conc., exposure on W side of NW-trending spur .1 mi S of wooded gully, 1.5 mi E of Grand River, and 7.4 mi E of Miscol, Corson County, South Dakota, USA. Collected by Ian G. Speden, 1962. IPA.00531: South Dakota. Corson County. Drepanochilus conc., exposure on W side of NW-trending spur .1 mi S of wooded gully, 1.5 mi E of Grand River, and 7.4 mi E of Miscol. [218; 62Dd]. Coll: Speden, I. G. 1962. Late Cretaceous. Maastrichtian. Fox Hills Fm. Trail City Mbr. Little Eagle Lithofacies. Drepanochilus Concs. Lower nicolleti Assemblage Zone.; IP number 42064; lot count 2; accn=IPA.07048.
Yale Peabody Museum’s own description