undet. Ammonoidea

Geological context: Late Cretaceous, Fox Hills Fm, Timber Lake Mbr. Collection locality: float and in place, includes many concs., from Sphenodiscus Layer up through CAZ, road cut and adjacent outcrops along W side of SD Rt. 63, from High Elk Hill to point .5 mi N, & between 5.5 and 6 mi S of intersection with US Rt. 212, High Elk Hill, 6 mi SSW of Eagle Butte village, Ziebach County, South Dakota, USA. Collected by Karl M. Waage, 1940/1941. IP number 312351; lot count 1; taphonomy=concretion; accn=IPA.07048; associatedwith=on same slab: IP.312351,IP.312352,IP.312354,IP.312355,IP.312356,IP.312357,IP.312359,IP.312362,IP.312353,IP.312358,IP.312360,IP.312361,IP.312363,IP.312364,IP.312365,IP.312366.