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The Quarterly journal of the Geological Society of London . PusirL Journ Geoi Soc Vol XI PI VII lwi ftJ jl 'i'r nat size JoATlini el COCCCTEIJTRIS LATIPINNIS Owen Jorcl West Itoc Pl VII Illustration biodiversitylibrary org Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological