Nuculana sp.
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., W-facing bluffs E of stream valley, 1 mi E of SD Rt. 63, SE of O'Leary ranch house, and about 1 mi N of Moreau River, and 4.5 mi NNE of Green Grass, Dewey County, South Dakota, USA. Collected by Ian G. Speden, 1962. IP number 856035; lot count 1; taphonomy=concretion; captive; accn=IPA.07048; associatedwith=on same slab: IP.856035,original label stored with this specimen: IP.856062,IP.856045,IP.856046,IP.856051,IP.856052,IP.856057,IP.856058,IP.856059,IP.856060,IP.856061,IP.856043,IP.856044,IP.856047,IP.856048,IP.856049,IP.856050,IP.856053,IP.856036,IP.856054,IP.856055,IP.856056,IP.856037,IP.856038,IP.856039,IP.856040,IP.856041,IP.856042.
Yale Peabody Museum’s own description