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GASTROPODA
 ACICULIDAE |
 ACROLOXIDAE |
 AGRIOLIMACIDAE |
 AMNICOLIDAE |
 ARIONIDAE |
 BITHYNIIDAE |
 BOETTGERILLIDAE |
 CHONDRINIDAE |
 CLAUSILIIDAE |
 COCHLICELLIDAE |
 COCHLICOPIDAE |
 COCHLIOPIDAE |
 DIPLOMMATINIDAE |
 DISCIDAE |
 ELLOBIDAE |
 ELLOBIIDAE |
 ELONIDAE |
 ENIDAE |
 EUCONULIDAE |
 FERUSSACIIDAE |
 GASTRODONTIDAE |
 HELICIDAE |
 HELICODONTIDAE |
 HYDROBIIDAE |
 HYGROMIIDAE |
 LAURIIDAE |
 LIMACIDAE |
 LYMNAEIDAE |
 MELANOPSIDAE |
 MILACIDAE |
 MOITESSIERIIDAE |
 NERITIDAE |
 ONCHIDIIDAE |
 ORCULIDAE |
 OTINIDAE |
 OXYCHILIDAE |
 PAPILLODERMATIDAE |
 PARMACELLIDAE |
 PHYSIDAE |
 PLANORBIDAE |
 POMATIIDAE |
 PRISTILOMATIDAE |
 PUNCTIDAE |
 PUPILLIDAE |
 PYRAMIDULIDAE |
 SPHINCTEROCHILIDAE |
 SUBULINIDAE |
 SUCCINEIDAE |
 TESTACELLIDAE |
 THIARIDAE |
 TRISSEXODONTIDAE |
 VALLONIIDAE |
 VALVATIDAE |
 VERTIGINIDAE |
 VITRINIDAE |
 XANTHONYCIDAE |
 ZONITIDAE |