Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Clade Heterobranchia Burmeister, 1837 see Superorder Heterobranchia Burmeister, 1837
       Informal Group Pulmonata Cuvier, 1814 see Order Pulmonata Cuvier, 1814
         Clade Eupulmonata Haszprunar & Huber, 1990 see Order Eupulmonata Haszprunar & Huber, 1990
           1 Superfamily Trimusculoidea Burch, 1945 (1840)
           2 Superfamily Otinoidea Adams & Adams, 1855
           3 Superfamily Ellobioidea Pfeiffer, 1854 (1822)
           4 Clade Systellommatophora Pilsbry, 1948 see Suborder Systellommatophora Pilsbry, 1948
           5 Clade Stylommatophora Schmidt, 1855 see Suborder Stylommatophora Schmidt, 1855