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 Trochoidea Rafinesque, 1815
         Family Trochidae Rafinesque, 1815 - top snails
           1 Subfamily Trochinae Rafinesque, 1815
           2 Subfamily Halistylinae Keen, 1958
           3 Subfamily Lirulariinae Hickman & McLean, 1990
           4 Subfamily Margaritinae Thiele, 1924, nom. cons. prop.
           5 Subfamily Stomatellinae Gray, 1840
           6 Subfamily Umboniinae Adams & Adams, 1854 (1840)