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Wrigley, A. (1934). English Eocene and Oligocene Cassididae, with notes on the nomenclature and morphology of the family. Proceedings of the Malacological Society of London. 21(2): 108-130, pl. 15-17.
Wrigley, A. (1934). English Eocene and Oligocene Cassididae, with notes on the nomenclature and morphology of the family. Proceedings of the Malacological Society of London. 21(2): 108-130, pl. 15-17.