Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     01 ?Superfamily †Euomphaloidea White, 1877
     02 ?Superfamily †Macluritoidea Carpenter, 1861
     03 Family †Anomphalidae Wenz, 1938
     04 Family †Codonocheilidae Miller, 1889
     05 Family †Crassimarginatidae Frýda, Blodgett & Lenz, 2002
     06 Family †Holopeidae Cossmann, 1908
     07 Family †Isospiridae Wangberg-Eriksson, 1964
     08 Family †Opisthonematidae Yu, 1976, nom. illeg.
     09 Family †Paraturbinidae Cossmann, 1916
     10 Family †Planitrochidae Knight, 1956
     11 Family †Pragoserpulinidae Frýda, 1998
     12 Family †Pseudophoridae Miller, 1889
     13 Family †Raphistomatidae Koken, 1896
     14 Family †Rhytidopilidae Starobogatov, 1976
     15 Family †Scoliostomatidae Frýda, Blodgett & Lenz, 2002
     16 Family †Sinuopeidae Wenz, 1938
     17 Superfamily †Clisospiroidea Miller, 1889
     18 Superfamily †Loxonematoidea Koken, 1889
     19 Superfamily †Ophiletoidea Koken, 1907
     20 Superfamily †Straparollinoidea Wagner, 2002
     21 Superfamily †Trochonematoidea Zittel, 1895
     22 Clade Patellogastropoda Lindberg, 1986 see Order Patellogastropoda Lindberg, 1986
     23 Clade Vetigastropoda Salvini-Plawen, 1980 see Order Vetigastropoda Salvini-Plawen, 1980
     24 Clade Cocculiniformia Haszprunar, 1987 see Superfamily Cocculinoidea Dall, 1882
     25 Clade Neritimorpha Koken, 1896 see Order Neritimorpha Golikov & Starobogatov, 1975
     26 Clade Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
     27 Clade Heterobranchia Burmeister, 1837 see Superorder Heterobranchia Burmeister, 1837