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A previously undescribed species in the family Neritidae is introduced from the late Ypresian (Cuisian) of the Paris Basin, France: Neritodryas marqueti nov. sp. The likely palaeoenvironments of fossil Neritodryas are considered with reference to the habitats of extant species.

Three previously undescribed species in the family Neritidae are introduced from the Solent Group of the Isle of Wight, Hampshire Basin, southern England. New species: Clithon (Pictoneritina) pococki sp. nov., Clithon (Pictoneritina) mortoni sp. nov. and Clithon (Pictoneritina) hillae sp. nov. The palaeoenvironments of the Solent Group Pictoneritina are compared with the habitats of Recent members of the subgenus.