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Keywords: Entobia Prairie Bluff Chalk Formation Cretaceous.JPG en Entobia a sponge boring from the Prairie Bluff Chalk Formation Maastrichtian Upper Cretaceous of Starkville Mississippi Preserved as a cast of the excavations 2013-12-29 14 42 43 own Wilson44691 cc-zero Uploaded with UploadWizard Trace fossils in the United States Clionaidae Cretaceous fossils from the United States Fossils of Mississippi |