Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Clade Vetigastropoda Salvini-Plawen, 1980 see Order Vetigastropoda Salvini-Plawen, 1980
       Superfamily Fissurelloidea Fleming, 1822
         Family Fissurellidae Fleming, 1822 - keyhole limpets
           Subfamily Emarginulinae Children, 1834
             1 Tribe Emarginulini Children, 1834
             2 Tribe Diodorini Odhner, 1932
             3 Tribe Fissurellideini Pilsbry, 1890
             4 Tribe Scutini Christiaens, 1973