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GASTROPODA
 ACICULIDAE |
 ACROLOXIDAE |
 AGRIOLIMACIDAE |
 ARIONIDAE |
 BITHYNIIDAE |
 BOETTGERILLIDAE |
 BRADYBAENIDAE |
 BULIMINIDAE |
 CARYCHIIDAE |
 CHONDRINIDAE |
 CLAUSILIIDAE |
 COCHLICOPIDAE |
 DAUDEBARDIIDAE |
 DISCIDAE |
 EUCONULIDAE |
 FERUSSACIIDAE |
 GASTRODONTIDAE |
 HELICIDAE |
 HYDROBIIDAE |
 HYGROMIIDAE |
 LIMACIDAE |
 LYMNAEIDAE |
 MILACIDAE |
 NERITIDAE |
 ORCULIDAE |
 PHYSIDAE |
 PLANORBIDAE |
 PUNCTIDAE |
 PUPILLIDAE |
 PYRAMIDULIDAE |
 STROBILOPSIDAE |
 SUCCINEIDAE |
 THIARIDAE |
 VALLONIIDAE |
 VALVATIDAE |
 VERTIGINIDAE |
 VITRINIDAE |
 VIVIPARIDAE |
 ZONITIDAE |