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undet. Sphenodiscidae
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
About this work
Geological context: Late Cretaceous, Fox Hills Fm, Trail City Mbr. Collection locality: various layers in road cut on E side of spur and on W side of old US 12 about .75 mi S of intersection with Wakpala road, N side of hill with Ridgeview 1954 bench mark, and 4.5 mi S of Mahto, Corson County, South Dakota, USA. Collected by Karl M. Waage, George Colton, 1949. IP number 655913; lot count 1; taphonomy=concretion; accn=IPA.07048; associatedwith=on same slab: IP.655903.
Yale Peabody Museum’s own descriptionSubjects
Credit lineundet. Sphenodiscidae (YPM IP 655913). Photograph by Jane Lockery. Yale Peabody Museum, Invertebrate Paleontology. CC0.
