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The Quarterly journal of the Geological Society of London . Quart Joum Geol Soc Vol XXM PI f'r Glieslacklitii Mntem Bro imp SPHENOPTERIS AFFINIS From the CaZciferovus and ston Series Pl VII Illustration biodiversitylibrary org Geological Society of London NameFound Sphenopteris affinis Biodiversity Heritage Library The