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A monograph of the British fossil Crustacea Pl. VI . ONTO GRAPH SoC DEVONIAN CRUSTACEA Tie' ims dei etJuh Bay Sew Limited kth Telsim PTERYGOTUS AN GL Agassi Ml Size II IRE Pl VI Illustration biodiversitylibrary org title Woodward Henry NameFound Crustacea NameConfirmed Crustacea EOLID NameBankID NameFound Pterygotus