Acmaeidae Forbes, 1850 (basis of record)
Admetinae Troschel, 1865 (status source)
Aeolidida accepted as Aeolidioidea Gray, 1827 (basis of record)
Aeolidiidae Gray, 1827 (basis of record)
Akeridae Mazzarelli, 1891 (additional source)
Ampullinidae Cossmann, 1919 (basis of record)
Ampullospiridae L. R. Cox, 1930 † accepted as Ampullinidae Cossmann, 1919 (source of synonymy)
Anatomidae J. H. McLean, 1989 (basis of record)
Anculinae Pruvot-Fol, 1954 (basis of record)
Aplysiomorpha accepted as Aplysiida (additional source)
Archidorididae Bergh, 1891 accepted as Dorididae Rafinesque, 1815 (additional source)
Asperspinidae Rankin, 1979 (basis of record)
Cadlinidae Bergh, 1891 (basis of record)
Caenogastropoda (basis of record)
Calliostomatinae Thiele, 1924 (1847) (basis of record)
Calliostomatini Thiele, 1924 (1847) accepted as Calliostomatinae Thiele, 1924 (1847) (basis of record)
Calyptraeidae Lamarck, 1809 (basis of record)
Calyptraeoidea Lamarck, 1809 (basis of record)
Campaniloidea (taxonomy source)
Campaniloidea (basis of record)
Cancellarioidea Forbes & Hanley, 1851 accepted as Volutoidea Rafinesque, 1815 (additional source)
Capulidae J. Fleming, 1822 (additional source)
Cephalaspidea (basis of record)
Cerithioidea J. Fleming, 1822 (additional source)
Cerithiopsoidea accepted as Triphoroidea J. E. Gray, 1847 (basis of record)
Clionidae Rafinesque, 1815 (basis of record)
Clionoidea Rafinesque, 1815 (basis of record)
Conidae J. Fleming, 1822 (basis of record)
Conoidea J. Fleming, 1822 (basis of record)
Coryphellidae Bergh, 1889 (basis of record)
Cuthonidae Odhner, 1934 (basis of record)
Cylichnidae H. Adams & A. Adams, 1854 (basis of record)
Dialidae Kay, 1979 (basis of record)
Diaphanidae Odhner, 1914 (1857) (basis of record)
Diaphaninae Odhner, 1914 (1857) (basis of record)
Diaphanoidea Odhner, 1914 (1857) accepted as Cylichnoidea H. Adams & A. Adams, 1854 (basis of record)
Dorididae Rafinesque, 1815 (additional source)
Doridoidea Rafinesque, 1815 (basis of record)
Doridoidei (basis of record)
Dotidae Gray, 1853 (basis of record)
Epitoniidae S. S. Berry, 1910 (1812) (additional source)
Epitonioidea S. S. Berry, 1910 (1812) (basis of record)
Euctenidiacea accepted as Doridina (basis of record)
Eulimidae R. A. Philippi, 1853 (basis of record)
Eulimoidea R. A. Philippi, 1853 accepted as Vanikoroidea Gray, 1840 (basis of record)
Eumetulidae A. N. Golikov & Starobogatov, 1975 accepted as Eumetulinae A. N. Golikov & Starobogatov, 1975 (basis of record)
Eumetulinae A. N. Golikov & Starobogatov, 1975 (basis of record)
Fionidae Gray, 1857 (additional source)
Fionoidea Gray, 1857 (basis of record)
Flabellinidae Bergh, 1889 (basis of record)
Flabellinoidea Bergh, 1889 accepted as Fionoidea Gray, 1857 (basis of record)
Gastropoda (basis of record)
Goniodorididae H. Adams & A. Adams, 1854 (basis of record)
Hedylopsidae Odhner, 1952 (additional source)
Hedylopsoidea Odhner, 1952 accepted as Acochlidioidea Küthe, 1935 (basis of record)
Hydrobiidae W. Stimpson, 1865 (status source)
Hydrobiinae W. Stimpson, 1865 (basis of record)
Hypsogastropoda (basis of record)
Lacunidae Gray, 1857 accepted as Littorinidae Children, 1834 (basis of record)
Laeocochlidinae A. N. Golikov & Starobogatov, 1987 (basis of record)
Lepetidae Gray, 1850 (additional source)
Limapontioidea Gray, 1847 accepted as Plakobranchoidea Gray, 1840 (basis of record)
Littorinidae Children, 1834 (basis of record)
Littorinimorpha (basis of record)
Littorinoidea Children, 1834 (basis of record)
Lomanotidae Bergh, 1890 (basis of record)
Lottiidae Gray, 1840 (additional source)
Lottioidea Gray, 1840 (basis of record)
Mathildidae Dall, 1889 (basis of record)
Muricoidea Rafinesque, 1815 (basis of record)
Naticidae Guilding, 1834 (basis of record)
Naticinae Guilding, 1834 (basis of record)
Naticoidea Guilding, 1834 (additional source)
Newtoniellidae Korobkov, 1955 (basis of record)
Newtoniellinae Korobkov, 1955 (basis of record)
Nudipleura (basis of record)
Odostomiinae Pelseneer, 1928 (basis of record)
Oenopotinae Bogdanov, 1987 accepted as Mangeliidae P. Fischer, 1883 (basis of record)
Onchidorididae Gray, 1827 (basis of record)
Onchidoridoidea Gray, 1827 (basis of record)
Paracoryphellidae M. C. Miller, 1971 (basis of record)
Patellidae Rafinesque, 1815 (basis of record)
Patelloidea Rafinesque, 1815 (basis of record)
Philinidae Gray, 1850 (1815) (basis of record)
Philinoidea Gray, 1850 (1815) (basis of record)
Placobranchacea accepted as Plakobranchoidea Gray, 1840 (basis of record)
Plakobranchoidea Gray, 1840 (basis of record)
Polyceridae Alder & Hancock, 1845 (basis of record)
Polycerinae Alder & Hancock, 1845 (basis of record)
Pseudolivoidea De Gregorio, 1880 accepted as Olivoidea Latreille, 1825 (basis of record)
Ptenoglossa (basis of record)
Pyramidellidae J. E. Gray, 1840 (basis of record)
Raphitomidae Bellardi, 1875 (basis of record)
Retusidae Thiele, 1925 (basis of record)
Rissoidae Gray, 1847 (basis of record)
Rissoinae Gray, 1847 accepted as Rissoidae Gray, 1847 (basis of record)
Rissooidea Gray, 1847 (basis of record)
Scissurellidae J. E. Gray, 1847 (basis of record)
Scissurelloidea J. E. Gray, 1847 (basis of record)
Skeneinae W. Clark, 1851 accepted as Skeneidae W. Clark, 1851 (basis of record)