Amnicolidae Tryon, 1863
Anabathridae Keen, 1971
Ascorhiidae Ponder, Nimbs & Shea, 2023
Assimineidae H. Adams & A. Adams, 1856
Baicaliidae P. Fischer, 1885
Beddomeiidae Ponder, Nimbs & Shea, 2023
Bithyniidae Gray, 1857
Bythinellidae Locard, 1893
Caecidae Gray, 1850
Caledoniellidae Rosewater, 1969
Calopiidae Ponder, 1999
Clenchiellidae D. W. Taylor, 1966
Cochliopidae Tryon, 1866
Elachisinidae Ponder, 1985
Emmericiidae Brusina, 1870
Epigridae Ponder, 1985
Erhaiidae G. M. Davis & Y.-H. Kuo, 1985
Falsicingulidae Slavoshevskaya, 1975
Fontigentidae D. W. Taylor, 1966
Helicostoidae Pruvot-Fol, 1937: synonym of Helicostoinae Pruvot-Fol, 1937 (superseded rank)
Hydrobiidae Stimpson, 1865
Hydrococcidae Thiele, 1928
Iravadiidae Thiele, 1928
Lithoglyphidae Tryon, 1866
Lithoglyphulidae Radoman, 1973: synonym of Horatiinae D. W. Taylor, 1966
Litthabitellidae Falniowski & Hofman, 2023
† Mesocochliopidae X.-H. Yu, 1987
Moitessieriidae Bourguignat, 1863
† Palaeobaicaliidae Sitnikova & Vinarski, 2023
Pomatiopsidae Stimpson, 1865
Spirostyliferinidae Layton, Middelfart, Tatarnic & N. G. Wilson, 2019
Squamapicidae L.-J. Zhang & von Rintelen, 2024
Stenothyridae Tryon, 1866
Tateidae Thiele, 1925
Teinostomatidae Cossmann, 1917
Tomichiidae Wenz, 1938
Tornidae Sacco, 1896 (1884)
Truncatellidae Gray, 1840
Vitrinellidae Bush, 1897
Unassigned to a family : Aenigmula Golding, 2014

Adeorbidae Monterosato, 1884 synonym of Tornidae Sacco, 1896 (1884)
Benedictiidae Clessin, 1880: synonym of Benedictiinae Clessin, 1880 (new rank)
Circulidae Fretter & Graham, 1962: synonym of Vitrinellidae Bush, 1897
Fairbankiinae Thiele, 1928: synonym of Iravadiidae Thiele, 1928
Subfamily Hemistomiinae Thiele, 1929: synonym of Tateidae Thiele, 1925
Hyalidae Golikov & Starobogatov, 1975: synonym of Iravadiidae Thiele, 1928
Kolhymamnicolidae Starobogatov, 1983: synonym of Amnicolinae Tryon, 1863
Limnoreidae B. Dybowski, 1911: synonym of Baicaliinae P. Fischer, 1885 (invalid: type genus a junior homonym)
Paludestrinidae Newton, 1891 synonym of Hydrobiidae Stimpson, 1865
Potamopyrgidae F. C. Baker, 1928: synonym of Tateidae Thiele, 1925
Pseudomerelininae Starobogatov, 1989: synonym of Iravadiidae Thiele, 1928
Pyrgulidae Brusina, 1882 (1869) synonym of Hydrobiidae Stimpson, 1865

Families

References