"Lower Heterobranchia" (basis of record)
Achatinidae Swainson, 1840 (basis of record)
Achatinina (basis of record)
Achatinoidea Swainson, 1840 (basis of record)
Aclididae G. O. Sars, 1878 accepted as Eulimidae R. A. Philippi, 1853 (source of synonymy)
Acochlidiimorpha (basis of record)
Acochlidioidea Küthe, 1935 (basis of record)
Acteocinidae Dall, 1913 accepted as Tornatinidae P. Fischer, 1883 (source of synonymy)
Acteonidae A. d'Orbigny, 1842 (basis of record)
Acteonimorpha (basis of record)
Aegiridae P. Fischer, 1883 (basis of record)
Aeolidioidea Gray, 1827 (basis of record)
Akeroidea Mazzarelli, 1891 (basis of record)
Aldisidae Odhner, 1939 accepted as Cadlinidae Bergh, 1891 (basis of record)
Amathinidae Ponder, 1987 (basis of record)
Anabathridae Keen, 1971 (basis of record)
Angariidae J. E. Gray, 1857 (basis of record)
Aplysiida (basis of record)
Aplysioidea Lamarck, 1809 (basis of record)
Archaeogastropoda accepted as Vetigastropoda (status source)
Architaenioglossa (additional source)
Architectonicidae J. E. Gray, 1850 (basis of record)
Architectonicoidea J. E. Gray, 1850 (basis of record)
Arminoidea Iredale & O'Donoghue, 1923 (1841) (basis of record)
Asthelysinae B. A. Marshall, 1991 (basis of record)
Ataphridae Cossmann, 1915 † (status source)
Atlantidae Rang, 1829 (basis of record)
Bathysciadiidae Dautzenberg & H. Fischer, 1900 (additional source)
Bellerophinidae Destombes, 1984 † (basis of record)
Belomitridae Kantor, Puillandre, Rivasseau & Bouchet, 2012 (status source)
Boselliidae Ev. Marcus, 1982 accepted as Plakobranchidae Gray, 1840 (source of synonymy)
Buccinoidea Rafinesque, 1815 (additional source)
Bulimulidae Tryon, 1867 (basis of record)
Bullinidae Gray, 1850 accepted as Aplustridae Gray, 1847 (source of synonymy)
Bulloidea Gray, 1827 (basis of record)
Bursidae Thiele, 1925 (basis of record)
Caecidae J. E. Gray, 1850 (basis of record)
Caliphyllidae Tiberi, 1881 accepted as Hermaeidae H. Adams & A. Adams, 1854 (source of synonymy)
Calliostomatidae Thiele, 1924 (1847) (basis of record)
Calliotectinae Pilsbry & Olsson, 1954 (basis of record)
Cancellariidae Forbes & Hanley, 1851 (status source)
Cavoliniidae J. E. Gray, 1850 (1815) (basis of record)
Cerithiopsidae H. Adams & A. Adams, 1853 (basis of record)
Chilodontaidae Wenz, 1938 (basis of record)
Choristellidae Bouchet & Warén, 1979 (basis of record)
Chromodorididae Bergh, 1891 (basis of record)
Chromodoridinae Bergh, 1891 (basis of record)
Chromodoridoidea Bergh, 1891 (basis of record)
Cimidae Warén, 1993 (basis of record)
Cimoidea Warén, 1993 (basis of record)
Cladobranchia (status source)
Cliidae Jeffreys, 1869 (additional source)
Cocculinida (status source)
Colloniidae Cossmann, 1917 (additional source)
Colubrariidae Dall, 1904 (status source)
Columbellidae Swainson, 1840 (status source)
Conradiidae A. N. Golikov & Starobogatov, 1987 (basis of record)
Cornirostridae Ponder, 1990 (basis of record)
Creseidae Rampal, 1973 (basis of record)
Cycloneritida (basis of record)
Cyclostrematidae P. Fischer, 1885 accepted as Liotiidae Gray, 1850 (source of synonymy)
Cymatiidae Iredale, 1913 (taxonomy source)
Cypraeoidea Rafinesque, 1815 (additional source)
Davisianinae Egorova, 1972 (basis of record)
Dendronotidae Allman, 1845 (basis of record)
Dendronotoidea Allman, 1845 (basis of record)
Diodorinae Odhner, 1932 accepted as Fissurellideinae Pilsbry, 1890 (basis of record)
Doridina (basis of record)
Ellobiida (basis of record)
Ellobiidae L. Pfeiffer, 1854 (1822) (basis of record)
Ellobioidea L. Pfeiffer, 1854 (1822) (basis of record)
Emarginulinae Children, 1834 (basis of record)
Eratoidae Gill, 1871 (status source)
Ergalataxinae Kuroda, T. Habe & Oyama, 1971 (basis of record)
Erosariinae Schilder, 1924 (basis of record)
Erroneinae Schilder, 1927 (status source)
Eucyclidae Koken, 1896 (basis of record)
Eudaroniidae Gründel, 2004 (basis of record)
Euthecosomata (basis of record)
Euthyneura (basis of record)
Fasciolariidae Gray, 1853 (additional source)
Favorininae Bergh, 1889 (basis of record)
Fissurellidae J. Fleming, 1822 (basis of record)
Fissurellideinae Pilsbry, 1890 (source of synonymy)
Fissurellinae J. Fleming, 1822 (basis of record)
Fissurelloidea J. Fleming, 1822 (basis of record)
Fluxinellini B. A. Marshall, 1991 (basis of record)
Fossarinae A. Adams, 1860 (basis of record)
Gastrodontoidea Tryon, 1866 (basis of record)
Geomitridae C. R. Boettger, 1909 (basis of record)
Gibbulinae Stoliczka, 1868 accepted as Cantharidinae J. E. Gray, 1857 (basis of record)
Graphidinae J. Barros, Mello, F. Barros, S. Lima, Santos, Cabral & Padovan, 2003 accepted as Cimidae Warén, 1993 (source of synonymy)
Gymnodorididae Odhner, 1941 accepted as Polycerinae Alder & Hancock, 1845 (source of synonymy)
Gymnosomata (basis of record)
Helicellinae Ihering, 1909 (basis of record)
Helicellini Ihering, 1909 (basis of record)
Helicoidea Rafinesque, 1815 (basis of record)
Helicoidei (basis of record)
Hermaeidae H. Adams & A. Adams, 1854 (basis of record)
Heterobranchia (additional source)