Phylum [Mollusca] Linnaeus, 1758 - molluscs
   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
         Suborder Taenioglossa see Order Mesogastropoda Thiele, 1925
           Superfamily Calyptraeacea Lamarck, 1809, nom. illeg. see Superfamily Calyptraeoidea Lamarck, 1809
             1 Family Trichotropidae Gray, 1850 - hairy-shells see Family Capulidae Fleming, 1822
             2 Family Crepidulidae Fleming, 1822 - slipper-shells see Family Calyptraeidae Lamarck, 1809