"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)
Acteocinidae Dall, 1913 accepted as Tornatinidae P. Fischer, 1883 (source of synonymy)
Acteonidae A. d'Orbigny, 1842 (basis of record)
Acteonimorpha (basis of record)
Adelomelonini Pilsbry & Olsson, 1954 (basis of record)
Aegiridae P. Fischer, 1883 (basis of record)
Aeolidioidea Gray, 1827 (basis of record)
Akeroidea Mazzarelli, 1891 (basis of record)
Anabathridae Keen, 1971 (basis of record)
Aplysiida (basis of record)
Architectonicidae J. E. Gray, 1850 (basis of record)
Architectonicoidea J. E. Gray, 1850 (basis of record)
Areneidae J. H. McLean, 2012 (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)
Belomitridae Kantor, Puillandre, Rivasseau & Bouchet, 2012 (status source)
Buccinoidea Rafinesque, 1815 (additional source)
Bulloidea Gray, 1827 (basis of record)
Bursidae Thiele, 1925 (basis of record)
Caecidae J. E. Gray, 1850 (basis of record)
Calliostomatidae Thiele, 1924 (1847) (basis of record)
Calliotectinae Pilsbry & Olsson, 1954 (basis of record)
Cancellariidae Forbes & Hanley, 1851 (status source)
Cataegidae J. H. McLean & Quinn, 1987 (basis of record)
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)
Columbariidae Tomlin, 1928 (basis of record)
Columbellidae Swainson, 1840 (status source)
Creseidae Rampal, 1973 (basis of record)
Curnonidae d'Udekem d'Acoz, 2017 (original description)
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)
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)
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)
Fautricinae B. A. Marshall, 1995 (additional source)
Fissurellidae J. Fleming, 1822 (basis of record)
Fissurellideinae Pilsbry, 1890 (source of synonymy)
Fissurelloidea J. Fleming, 1822 (basis of record)
Fluxinellini B. A. Marshall, 1991 (basis of record)
Fossarinae A. Adams, 1860 (basis of record)
Guttulinae Goryachev, 1987 (basis of record)
Gymnosomata (basis of record)
Helicoidea Rafinesque, 1815 (basis of record)
Helicoidei (basis of record)
Heterobranchia (additional source)
Heterobranchia (basis of record)
Hipponicidae Troschel, 1861 (basis of record)
Hipponicoidea Troschel, 1861 (basis of record)
Hyalogyrinidae Warén & Bouchet, 1993 (basis of record)
Lamellariinae A. d'Orbigny, 1841 (status source)
Limacinidae Gray, 1840 (basis of record)
Limacinoidea Gray, 1840 (basis of record)
Luriinae Schilder, 1932 (basis of record)
Lyocyclidae Thiele, 1925 (basis of record)
Lyriini Pilsbry & Olsson, 1954 (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)
Metaxia Monterosato, 1884 (subsequent type designation)
Micropilina Warén, 1989 (status source)
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)

 Authority

 for Septariidae Jousseaume, 1894

Golikov & Starobogatov (1975) declared this family as new though the true author of this taxon is Jousseaume ... [details]

 Authority

 for Septariidae Jousseaume, 1894

Golikov & Starobogatov (1975) declared this family as new though the true author of this taxon is Jousseaume ... [details]

 Classification

 for Mesocochliopidae X.-H. Yu, 1987 †

Mesocochliopa was originally classified as a genus of Amnicolidae by Yen & Reeside (1946) and was also listed as a ... [details]

 Homonymy

 for Cepolidae Ihering, 1909

Cepolidae Ihering, 1909 is a junior homonym of Cepolidae Rafinesque, 1815 [Pisces]. The case will be referred to ... [details]

 Nomenclature

 for Babyloniidae Kuroda, Habe & Oyama, 1971

Two family-group names are older than Babyloniidae. Swainson based his concept of Eburninae on species of ... [details]

 Nomenclature

 for Cerastua Strand, 1928

Cerastua Strand, 1928 was proposed as a replacement name for Cerastus E. von Martens, 1860 (non Dejean, 1821, ... [details]

 Nomenclature

 for Cerastuidae Wenz, 1930

Cerastuidae was based on Cerastua Strand, 1928, an unnecessary replacement name for Ceratsus E. von Martens, 1860. [details]

 Nomenclature

 for Cionellidae L. Pfeiffer, 1879

When he established Cochlicopidae, Pilsbry (1900) did not justify his action. Later, he (Pilsbry, 1908 [in ... [details]

 Nomenclature

 for Ficus Röding, 1798

Röding listed "Bulla ficus" [Murex ficus Linnaeus, 1758] in the synonymy of Ficus communis Röding, 1798, and ... [details]

 Nomenclature

 for Umboniinae H. Adams & A. Adams, 1854 (1840)

Takes precedence from Rotellinae Swainson, 1840 [details]

 Spelling

 for Anostomopsidae H. Nordsieck, 1986 †

The spelling "Anastomopsidae" as used in the literature is based on Anastomopsis, an incorrect subsequent spelling ... [details]

 Taxonomic remark

 for Graphidulidae Stephenson, 1941 †

Name only, no diagnosis. Not available under Art. 13.2.1, unless discovery of an author who used the name before 2000 [details]

 Taxonomic remark

 for Orthopoma J. E. Gray, 1868

The genus name Orthopoma was established without any included species, and it appears that none was ever ... [details]

 Taxonomy

 for Siphopsinae Le Renard, 1995 †

Originally proposed as subfamily of Conidae although ranked as "Famille Siphopsinae" [sic] in Pacaud & Le Renard, ... [details]

 Taxonomy

 for Syphopsinae Le Renard, 2005 †

Originally proposed as a subfamily of Conidae, Siphopsinae Le Renard, 1995 is invalid because the type genus type ... [details]

 Taxonomy

 for Triforis Deshayes, 1834

The name Triforis, as used by Deshayes (1834) is an incorrect subsequent spelling of Triphora Blainville, 1828 and ... [details]

 Type species

 for Anoptychia Koken, 1892 †

For uncertainties concerning the type species, see the discussion by Bouchet et al. (2017). [details]