Aclididae G. O. Sars, 1878 accepted as Eulimidae R. A. Philippi, 1853 (basis of record)
Acmaeidae Forbes, 1850 (basis of record)
Acteonoidea A. d'Orbigny, 1842 (basis of record)
Adeorbidae Monterosato, 1884 accepted as Tornidae Sacco, 1896 (1884) (basis of record)
Admetinae Troschel, 1865 (status source)
Aeolidida accepted as Aeolidioidea Gray, 1827 (basis of record)
Aeolidiidae Gray, 1827 (basis of record)
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)
Aplysiidae Lamarck, 1809 (additional source)
Aplysiomorpha accepted as Aplysiida (additional source)
Aporrhaidae J. E. Gray, 1850 (additional source)
Asperspinidae Rankin, 1979 (basis of record)
Assimineidae H. Adams & A. Adams, 1856 (basis of record)
Bullidae Gray, 1827 (source of synonymy)
Cadlinidae Bergh, 1891 (basis of record)
Caecinae J. E. Gray, 1850 (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)
Carinariidae Blainville, 1818 (additional source)
Cassidae Latreille, 1825 (basis of record)
Cassoidea accepted as Tonnoidea Suter, 1913 (1825) (basis of record)
Cavolinioidea J. E. Gray, 1850 (1815) (basis of record)
Cephalaspidea (basis of record)
Cerithiidae J. Fleming, 1822 (basis of record)
Cerithioidea J. Fleming, 1822 (additional source)
Cerithiopsoidea accepted as Triphoroidea J. E. Gray, 1847 (basis of record)
Chilodontidae Wenz, 1938 accepted as Chilodontaidae Wenz, 1938 (additional source)
Choristellinae Bouchet & Warén, 1979 accepted as Choristellidae Bouchet & Warén, 1979 (basis of record)
Clathurellidae H. Adams & A. Adams, 1858 (additional source)
Clionidae Rafinesque, 1815 (basis of record)
Clionoidea Rafinesque, 1815 (basis of record)
Cocculinidae Dall, 1882 (basis of record)
Cocculinoidea Dall, 1882 (basis of record)
Cochliopidae Tryon, 1866 (basis of record)
Conidae J. Fleming, 1822 (basis of record)
Conoidea J. Fleming, 1822 (basis of record)
Corambidae Bergh, 1871 (basis of record)
Coryphellidae Bergh, 1889 (basis of record)
Crepidulidae J. Fleming, 1822 accepted as Calyptraeidae Lamarck, 1809 (source of synonymy)
Crepiduloidea J. Fleming, 1822 accepted as Calyptraeoidea Lamarck, 1809 (additional source)
Cuthonidae Odhner, 1934 (basis of record)
Cylichnidae H. Adams & A. Adams, 1854 (basis of record)
Cymatiinae Iredale, 1913 (1854) accepted as Cymatiidae Iredale, 1913 (additional source)
Cymbuliidae Gray, 1840 (basis of record)
Cymbulioidea Gray, 1840 (basis of record)
Dendrodorididae O'Donoghue, 1924 (1864) (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)
Drilliidae Olsson, 1964 (basis of record)
Elachisinidae Ponder, 1985 (basis of record)
Ellobiinae L. Pfeiffer, 1854 (1822) (basis of record)
Elysiidae Forbes & Hanley, 1851 accepted as Plakobranchidae Gray, 1840 (source of synonymy)
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)
Eumetulinae A. N. Golikov & Starobogatov, 1975 (basis of record)
Eupulmonata (basis of record)
Facelinidae Bergh, 1889 (additional source)
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)
Fossaridae A. Adams, 1860 accepted as Fossarinae A. Adams, 1860 (basis of record)
Gastropoda (basis of record)
Glaucidae Gray, 1827 (basis of record)
Glebinae van der Spoel, 1976 (basis of record)
Goniodorididae H. Adams & A. Adams, 1854 (basis of record)
Haminoeoidea Pilsbry, 1895 (basis of record)
Hedylopsidae Odhner, 1952 (additional source)
Hedylopsoidea Odhner, 1952 accepted as Acochlidioidea Küthe, 1935 (basis of record)
Heteropoda Lamarck, 1812 accepted as Pterotracheoidea Rafinesque, 1814 (basis of record)
Hydrobiidae W. Stimpson, 1865 (status source)
Hydrobiinae W. Stimpson, 1865 (basis of record)
Hygrophila (basis of record)
Hypsogastropoda (basis of record)
Janthinidae Lamarck, 1822 accepted as Epitoniidae S. S. Berry, 1910 (1812) (additional source)
Lacunidae Gray, 1857 accepted as Littorinidae Children, 1834 (basis of record)
Laeocochlidinae A. N. Golikov & Starobogatov, 1987 (basis of record)
Lepetellidae Dall, 1882 (basis of record)
Lepetellinae Dall, 1882 accepted as Lepetellidae Dall, 1882 (basis of record)
Lepetelloidea Dall, 1882 (basis of record)
Lepetidae Gray, 1850 (additional source)
Limapontioidea Gray, 1847 accepted as Plakobranchoidea Gray, 1840 (basis of record)

 Classification

 for Cocculinida

Established as suborder containing the superfamilies Cocculinoidea and Lepetelloidea by Haszprunar (1987). ... [details]

 Classification

 for Euarminida

Wägele & Willan (2000) concluded that the Arminoida as classically understood (containing Arminidae, ... [details]

 Classification

 for Neolepetopsidae J. H. McLean, 1990

The distinctiveness of the radula, which seems to have been the main reason for a superfamily level for this group ... [details]

 Classification

 for Neolepetopsoidea J. H. McLean, 1990

The distinctiveness of the radula, which seems to have been the main reason for a superfamily level for this group ... [details]

 Classification

 for Vermetidae Rafinesque, 1815

The position of the Vermetidae has been controversial. However, sperm ultrastructure (Healy, 1988) and molecular ... [details]

 Nomenclature

 for Chlamydephorus W. G. Binney, 1879

Chlamydephorus H.O. Lenz, 1831 was suggested as a grammatically more correct name for Chlamyphorus Harlan, 1825 ... [details]

 Nomenclature

 for Runcinacea

Originally introduced by Colosi (1915) as Runcinidea, a "section" [above family level] of Tectibranchia containing ... [details]

 Spelling

 for Acochlidiimorpha

Spelling emended to (order) Acochlidioidea by Rankin (1979: 83); to Acochlidiomorpha by Salvini-Plawen (1983: 309); ... [details]

 Spelling

 for Plakobranchidae Gray, 1840

Original spelling Placobranchidae, based on Placobranchus, an incorrect subsequent spelling by Férussac (1824) in ... [details]

 Taxonomy

 for Thalassocyon Barnard, 1960

Riedel (1995) elevated this genus to a family level (Thalassocyonidae), a vision not supported in Verhaeghe & Poppe ... [details]