Limopsis striatopunctatus
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: float, Limopsis conc., conc. 1, in gully 6 ft below Limopsis layer, prominent isolated knob to SW of main ridge, on W side of prairie trail, with several outcrops on W flanks, Long's Ridge, and 6.8 mi W of Whitehorse, Dewey County, South Dakota, USA. Collected by Ian G. Speden, 1962. IP number 344260; lot count 1; taphonomy=concretion; accn=IPA.07048; associatedwith=on same slab: IP.344260,IP.344269,IP.344270,IP.344271,IP.344274,IP.344275,IP.344278,IP.344280,IP.344281,IP.344283,IP.344284,IP.344285,IP.344287,IP.344289,IP.344290,IP.344293,IP.344296,IP.344297,IP.344262,IP.344264,IP.344268,IP.344272,IP.344273,IP.344277,IP.344282,IP.344286,IP.344288,IP.344291,IP.344261,IP.344276,IP.344279,IP.344292,IP.344294,IP.344295,IP.344263,IP.344265,IP.344266,IP.344267.
Yale Peabody Museum’s own description