Bivalvia

Geological context: Late Cretaceous, Fox Hills Fm. Collection locality: unit 9, local Corbicula bed in sand between sec. A and sec. B just at top of ridge, on W side of draw along E side of which Sec. A measured, gulleys of forks of N Prong of Buck Creek (=Crazy Woman Creek), where it cuts through the Fox Hills Fm ridge, & E for .8 mi from Twentyeight Road along the ridge, & 6.5 mi NE of Lance Creek village, Niobrara County, Wyoming, USA. Collected by Charles W. Thayer, Karl M. Waage, Jeffrey K. Waage, 1967. IP number 654228; lot count 1; taphonomy=concretion; accn=IPA.07132; associatedwith=on same slab: IP.654155.