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Calyptactis spinosus
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
About this work
Geological context: Late Mississippian, Renault Ls. Collection locality: N-S outcrop belt E of Waterloo, Monroe County, Illinois, USA. IP number 224141; lot count 1; institutional specimen number 0215; institutional specimen number MPRI 0215; accn=YPM.11244.
Yale Peabody Museum’s own descriptionSubjects
Credit lineCalyptactis spinosus (YPM IP 224141). Photograph by Susan H. Butts. Yale Peabody Museum, Invertebrate Paleontology. CC0.