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Keywords from Image Description:
PlatystrophiaOrdovician. en Platystrophia ponderosa Maysvillian Upper Ordovician near Madison Indiana Now Vinlandostrophia ponderosa Foerste see Zuykov and Harper Platystrophia Orthida and new related Ordovician and Early Silurian brachiopod genera Estonian Earth Sci Own Wilson Photograph taken by Mark Wilson Department of Geology