Scaphites sp.
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
Geological context: Late Cretaceous, Carlile Sh, Turner Sandy Mbr. Collection locality: concretion b, huge limestone concretions in Turner, N end of Orman Dam, E side of Belle fourche Reservoir, & 3.5 mi N of US Rt 212, & 7 mi NE of Belle Fourche, Butte County, South Dakota, USA. Collected by Karl M. Waage, Neil H. Landman, 1977. IP number 613677; lot count 1; taphonomy=concretion; accn=IPA.07111; associatedwith=IP.613678,IP.613679,IP.613680,IP.613681,IP.613682,IP.613683,IP.613684,IP.613685,IP.613686,IP.613688,IP.613689,IP.613690,IP.613691,IP.613692,IP.613693,IP.613694,IP.613695,IP.613696,IP.613697,IP.613698,IP.613699,IP.613700,IP.613701,IP.613702,IP.613703,IP.613704,IP.613705,IP.613706,IP.613707,IP.613687.
Yale Peabody Museum’s own description