Template:Gastropoda taxonomy

† Paleozoic molluscs of uncertain systematic position     † Basal taxa that are certainly Gastropoda     Patellogastropoda     Vetigastropoda     Cocculiniformia   Neritimorpha   † Paleozoic Neritimorpha of uncertain systematic position     † Cyrtoneritimorpha     Cycloneritimorpha      Caenogastropoda    Caenogastropoda of uncertain systematic position     Architaenioglossa     Sorbeoconcha    Hypsogastropoda    Littorinimorpha     Ptenoglossa     Neogastropoda       Heterobranchia   Lower Heterobranchia    Opisthobranchia    Cephalaspidea     Pteropoda: Thecosomata     Pteropoda: Gymnosomata     Aplysiomorpha     Acochlidiacea     Sacoglossa     Cylindrobullida     Umbraculida    Nudipleura    Pleurobranchomorpha    Nudibranchia    Euctenidiacea    Dexiarchia    Pseudoeuctenidiacea    Cladobranchia    Euarminida     Dendronotida     Aeolidida             Pulmonata   Basommatophora    Eupulmonata    Systellommatophora    Stylommatophora    Elasmognatha     Orthurethra     Sigmurethra