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Keywords from Image Description:
The Quarterly journal of the Geological Society of London . PROCEEDINGS OF THE GEOLOGICAL SOCIETY Apr Terebratula biplicata Sow obesa Sow Terebratulina gracilis Schl Ehynchonella Mantelliana Sow Exogyra Ostrea Plicatula inflata Sow Casts of several other bivalves Holaster subglobosa Leske sp Micraster Ananchytes Discoidea