Class Gastropoda Cuvier, 1795 - snails and slugs
   Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
     Order Mesogastropoda Thiele, 1925 - mesogastropods see [unranked] mesogastropods
       1 Superfamily Architaenioglossa Haller, 1890 see Order Architaenioglossa Haller, 1892
       2 Superfamily Valvatacea Blake, 1987 see Superfamily Valvatoidea Gray, 1840
       3 Superfamily Rissoacea Gray, 1847 see Superfamily Rissooidea Gray, 1847
       4 Superfamily Clavacea