"Lower Heterobranchia" (basis of record)
Acteonidae A. d'Orbigny, 1842 (basis of record)
Acteonimorpha (basis of record)
Actinocyclidae O'Donoghue, 1929 (basis of record)
Aegiridae P. Fischer, 1883 (basis of record)
Aeolidioidea Gray, 1827 (basis of record)
Akeroidea Mazzarelli, 1891 (basis of record)
Aplysiida (basis of record)
Archaeogastropoda accepted as Vetigastropoda (status source)
Architectonicoidea J. E. Gray, 1850 (basis of record)
Arminoidea Iredale & O'Donoghue, 1923 (1841) (basis of record)
Ataphridae Cossmann, 1915 † (status source)
Buccinoidea Rafinesque, 1815 (additional source)
Bulloidea Gray, 1827 (basis of record)
Calliostomatidae Thiele, 1924 (1847) (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)
Chromodorididae Bergh, 1891 (basis of record)
Chromodoridinae Bergh, 1891 (basis of record)
Chromodoridoidea Bergh, 1891 (basis of record)
Cladobranchia (status source)
Cliidae Jeffreys, 1869 (additional source)
Cocculinida (status source)
Colloniidae Cossmann, 1917 (additional source)
Columbariidae Tomlin, 1928 (basis of record)
Curnonidae d'Udekem d'Acoz, 2017 (original description)
Cyclostrematidae P. Fischer, 1885 accepted as Liotiidae Gray, 1850 (source of synonymy)
Cymatiidae Iredale, 1913 (taxonomy source)
Cypraeoidea Rafinesque, 1815 (additional source)
Dendronotoidea Allman, 1845 (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)
Eucyclidae Koken, 1896 (basis of record)
Euthecosomata (basis of record)
Euthyneura (basis of record)
Fautricinae B. A. Marshall, 1995 (additional source)
Fissurellidae J. Fleming, 1822 (basis of record)
Fissurellinae J. Fleming, 1822 (basis of record)
Fissurelloidea J. Fleming, 1822 (basis of record)
Fossarinae A. Adams, 1860 (basis of record)
Gymnosomata (basis of record)
Heterobranchia (additional source)
Heterobranchia (basis of record)
Hipponicidae Troschel, 1861 (basis of record)
Hipponicoidea Troschel, 1861 (basis of record)
Lamellariinae A. d'Orbigny, 1841 (status source)
Limacinidae Gray, 1840 (basis of record)
Limacinoidea Gray, 1840 (basis of record)
Mangeliidae P. Fischer, 1883 (status source)
Margarellinae S. T. Williams, 2013 (basis of record)
Margaritidae Thiele, 1924 (basis of record)
Mathildoidea Dall, 1889 (basis of record)
Mitroidea Swainson, 1831 (basis of record)
Moelleriinae Hickman & J. H. McLean, 1990 (additional source)
Muricidae Rafinesque, 1815 (basis of record)
Nacellidae Thiele, 1891 (basis of record)
Nassariidae Iredale, 1916 (1835) (status source)
Neomphalida (basis of record)
Neomphaliones (basis of record)
Notodorididae Eliot, 1910 accepted as Aegiridae P. Fischer, 1883 (basis of record)
Nudibranchia (basis of record)
Nystiellidae Clench & R. D. Turner, 1952 accepted as Epitoniidae S. S. Berry, 1910 (1812) (source of synonymy)
Omalogyridae G. O. Sars, 1878 (basis of record)
Omalogyroidea G. O. Sars, 1878 (basis of record)
Orbitestellidae Iredale, 1917 (basis of record)
Orbitestelloidea Iredale, 1917 (basis of record)
Pendromidae Warén, 1991 (basis of record)
Planaxidae J. E. Gray, 1850 (basis of record)
Polyceroidea Alder & Hancock, 1845 (basis of record)
Proctonotoidea Gray, 1853 (status source)
Provannidae Warén & Ponder, 1991 (basis of record)
Pseudothecosomata (basis of record)
Pteropoda (basis of record)
Pylopulmonata (basis of record)
Pyramidelloidea J. E. Gray, 1840 (basis of record)
Ringipleura (basis of record)
Rissoellidae Gray, 1850 (basis of record)
Rissoelloidea Gray, 1850 (basis of record)
Seguenziidae A. E. Verrill, 1884 (basis of record)
Seguenziinae A. E. Verrill, 1884 (basis of record)
Seguenziini A. E. Verrill, 1884 (basis of record)
Seguenzioidea A. E. Verrill, 1884 (basis of record)
Siphonariida (basis of record)
Siphonarimorpha (basis of record)
Skeneidae W. Clark, 1851 (basis of record)
Solariellidae A. W. B. Powell, 1951 (basis of record)
Stromboidea Rafinesque, 1815 (basis of record)
Stylommatophora (basis of record)
Tectipleura (basis of record)
Trachysma G. O. Sars, 1878 accepted as Torellia Jeffreys, 1867 (subsequent type designation)
Trichotropidae J. E. Gray, 1850 accepted as Capulidae J. Fleming, 1822 (source of synonymy)
Triviidae Troschel, 1863 (basis of record)
Trochaclididae Thiele, 1928 (basis of record)
Trochida (basis of record)
Trochidae Rafinesque, 1815 (basis of record)