Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Superorder Archaeogastropoda Thiele, 1925
         Order Cocculiniformia Hazsprunar, 1987 see Superorder Cocculiniformia Haszprunar, 1987
           Superfamily Lepetelloidea Dall, 1882
             Family Pseudococculinidae Hickman, 1983
               Subfamily Pseudococculininae Hickman, 1983 see Family Pseudococculinidae Hickman, 1983
                 1 Genus Pseudococculina Schepman, 1908
                 2 Genus Bandabyssia L.I. Moskalev, 1976
                 3 Genus Kurilabyssia Moskalev, 1976
                 4 Genus Mesopelex Marshall, 1986
                 5 Genus Notocrater Finlay, 1927
                 6 Genus Tentaoculus L.I. Moskalev, 1976