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Problematica
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
About this work
Geological context: Late Cretaceous, Pierre Sh, upper Mobridge Mbr. Collection locality: ls conc. layers below upper bentonite, NW-facing bluff S of Moreau River, .2 mi SW of SD Rt. 63, and 2 mi NE of Green Grass, Dewey County, South Dakota, USA. Collected by Karl M. Waage, Ian G. Speden, James F. Mello, 1940/1960. IP number 313630; lot count 1; taphonomy=concretion; accn=IPA.07048; associatedwith=on same slab: IP.313620.
Yale Peabody Museum’s own descriptionSubjects
Credit lineProblematica (YPM IP 313630). Photograph by Jane Lockery. Yale Peabody Museum, Invertebrate Paleontology. CC0.
