"Lower Heterobranchia" (basis of record)
Acochlidiimorpha (basis of record)
Acochlidioidea Küthe, 1935 (basis of record)
Acteonimorpha (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)
Aplysiida (basis of record)
Buccinoidea Rafinesque, 1815 (additional source)
Bulloidea Gray, 1827 (basis of record)
Calliostomatidae Thiele, 1924 (1847) (basis of record)
Cancellariidae Forbes & Hanley, 1851 (status source)
Cerithiopsidae H. Adams & A. Adams, 1853 (basis of record)
Chromodorididae Bergh, 1891 (basis of record)
Chromodoridoidea Bergh, 1891 (basis of record)
Cladobranchia (status source)
Colloniidae Cossmann, 1917 (additional source)
Columbellidae Swainson, 1840 (status source)
Cypraeoidea Rafinesque, 1815 (additional source)
Dendronotidae Allman, 1845 (basis of record)
Dendronotoidea Allman, 1845 (basis of record)
Doridina (basis of record)
Emarginulinae Children, 1834 (basis of record)
Euthecosomata (basis of record)
Euthyneura (basis of record)
Fasciolariidae Gray, 1853 (additional source)
Fissurellidae J. Fleming, 1822 (basis of record)
Fissurelloidea J. Fleming, 1822 (basis of record)
Gymnosomata (basis of record)
Heterobranchia (basis of record)
Heterobranchia (additional source)
Hydrobiidae W. Stimpson, 1865 (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)
Margaritidae Thiele, 1924 (basis of record)
Mathildoidea Dall, 1889 (basis of record)
Moelleriinae Hickman & J. H. McLean, 1990 (additional source)
Muricidae Rafinesque, 1815 (basis of record)
Nassariidae Iredale, 1916 (1835) (status source)
Nudibranchia (basis of record)
Omalogyridae G. O. Sars, 1878 (basis of record)
Omalogyroidea G. O. Sars, 1878 (basis of record)
Parhedyloidea Thiele, 1931 (basis of record)
Polyceroidea Alder & Hancock, 1845 (basis of record)
Pteropoda (basis of record)
Ptychatractidae W. Stimpson, 1865 (taxonomy source)
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)
Sacoglossa (basis of record)
Skeneidae W. Clark, 1851 (basis of record)
Skeneopsidae Iredale, 1915 (additional source)
Solariellidae A. W. B. Powell, 1951 (basis of record)
Stromboidea Rafinesque, 1815 (basis of record)
Tectipleura (basis of record)
Trochida (basis of record)
Trochidae Rafinesque, 1815 (basis of record)
Trochoidea Rafinesque, 1815 (basis of record)
Turbinelloidea Swainson, 1835 (status source)
Turritellopsis G. O. Sars, 1878 (subsequent type designation)
Velutinidae Gray, 1840 (additional source)
Velutinoidea Gray, 1840 (additional source)
Volutoidea Rafinesque, 1815 (status source)
Xenophoridae Troschel, 1852 (1840) (basis of record)
Xenophoroidea Troschel, 1852 (1840) accepted as Stromboidea Rafinesque, 1815 (basis of record)