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
         1 Family Trochidae Rafinesque, 1815 - top snails
         2 Family Calliostomatidae Thiele, 1924 (1847)
         3 Family †Elasmonematidae Knight, 1956
         4 Family †Eucochlidae Bandel, 2002
         5 Family †Microdomatidae Wenz, 1938
         6 Family †Proconulidae Cox, 1960
         7 Family Solariellidae Powell, 1951
         8 Family †Tychobraheidae Horný, 1992
         9 Family †Velainellidae Vasseur, 1880