1883 = Tracheopulmonata ? Superfamily Succineoidea Beck, 1837 = Heterurethra 2005 taxonomy The taxonomy of this group according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005) was as follows: Informal Group Pulmonata Contains the informal group Basommatophora and the clade Eupulmonata Informal Group Basommatophora Contains the clade Hygrophila Superfamily Amphiboloidea Family Amphibolidae Superfamily Siphonarioidea Family Siphonariidae † Family Acroreiidae Clade Hygrophila Superfamily Chilinoidea Family Chilinidae Family Latiidae Superfamily Acroloxoidea Family Acroloxidae Superfamily Lymnaeoidea Family Lymnaeidae Superfamily Planorboidea Family Planorbidae Family Physidae Clade Eupulmonata Contains the clades Systellommatophora and Stylommatophora Superfamily Trimusculoidea Family Trimusculidae Superfamily Otinoidea Family Otinidae Family Smeagolidae Superfamily Ellobioidea Family Ellobiidae Clade Systellommatophora ( = Gymnomorpha) Superfamily Onchidioidea Family Onchidiidae Superfamily Veronicelloidea Family Veronicellidae Family Rathouisiidae Clade Stylommatophora Contains the subclades Elasmognatha, Orthurethra and the informal group Sigmurethra Subclade Elasmognatha Superfamily Succineoidea Family Succineidae Superfamily Athoracophoroidea Family Athoracophoridae Subclade Orthurethra Superfamily Partuloidea Family Partulidae Family Draparnaudiidae Superfamily Achatinelloidea Family Achatinellidae Superfamily Cochlicopoidea Family Cochlicopidae Family Amastridae Superfamily Pupilloidea Family Pupillidae Family Argnidae Family Chondrinidae † Family Cylindrellinidae Family Lauriidae Family Orculidae Family Pleurodiscidae Family Pyramidulidae Family Spelaeodiscidae Family Strobilopsidae Family Valloniidae Family Vertiginidae Superfamily Enoidea Family Enidae Family Cerastidae Informal Group Sigmurethra Superfamily Clausilioidea Family Clausiliidae † Family Anadromidae † Family Filholiidae † Family Palaeostoidae Superfamily Orthalicoidea Family Orthalicidae Family Cerionidae Family Coelociontidae † Family Grangerellidae Family Megaspiridae Family Placostylidae Family Urocoptidae Superfamily Achatinoidea Family Achatinidae Family Ferussaciidae Family Micractaeonidae Family Subulinidae Superfamily Aillyoidea Family Aillyidae Superfamily Testacelloidea Family Testacellidae Family Oleacinidae Family Spiraxidae Superfamily Papillodermatoidea Family Papillodermatidae Superfamily Streptaxoidea Family Streptaxidae Superfamily Rhytidoidea Family Rhytididae Family Chlamydephoridae Family Haplotrematidae Family Scolodontidae Superfamily Acavoidea Family Acavidae Family Caryodidae Family Dorcasiidae Family Macrocyclidae Family Megomphicidae Family Strophocheilidae Superfamily Punctoidea Family Punctidae † Family Anastomopsidae Family Charopidae Family Cystopeltidae Family Discidae Family Endodontidae Family Helicodiscidae Family Oreohelicidae Family Thyrophorellidae Superfamily Sagdoidea Family Sagdidae limacoid clade Superfamily Staffordioidea Family Staffordiidae Superfamily Dyakioidea Family Dyakiidae Superfamily Gastrodontoidea Family Gastrodontidae Family Chronidae Family Euconulidae Family Oxychilidae Family Pristilomatidae Family Trochomorphidae Fossil taxa probably belonging to the Gastrodontoidea Subfamily † Archaeozonitinae Subfamily † Grandipatulinae Subfamily † Palaeoxestininae Superfamily Parmacelloidea Family Parmacellidae Family Milacidae Family Trigonochlamydidae Superfamily Zonitoidea Family Zonitidae Superfamily Helicarionoidea Family Helicarionidae Family Ariophantidae Family Urocyclidae Superfamily Limacoidea Family Limacidae Family Agriolimacidae Family Boettgerillidae Family Vitrinidae other Sigmurethra Two superfamilies belongs to clade Sigmurethra, but they are not in the limacoid clade. Superfamily Arionoidea Family Arionidae Family Anadenidae Family Ariolimacidae Family