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 Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l.
           Superfamily Fissurelloidea Fleming, 1822 [monotypic]
             Family Fissurellidae Fleming, 1822 - keyhole limpets
               Subfamily Fissurellinae Fleming, 1822
                 01 Genus Fissurella Bruguière, 1789
                 02 Genus Amblychilepas Pilsbry, 1890
                 03 Genus Atractotrema Cossmann, 1888
                 04 Genus Capiluna Gray, 1857 see Genus Diodora Gray, 1821
                 05 Genus Cosmetalepas Iredale, 1924
                 06 Genus Dendrofissurella McLean & Kilburn, 1986
                 07 Genus Lucapina Sowerby, 1835
                 08 Genus Macrochisma Gray, 1840, orth. inval. see Genus Macroschisma Sowerby, 1835
                 09 Genus Medusafissurella McLean & Kilburn, 1986
                 10 Genus Montfortulana Habe, 1961