title: Truncatelloidea
text: # Truncatelloidea
  
  Truncatelloidea is a superfamily of snails, gastropod mollusks in the clade Caenogastropoda.
  
  The families are marine, brackish, freshwater and terrestrial.
  
  ## Families
  
  * Amnicolidae Tryon, 1863
  * Anabathridae Keen, 1971
  * Assimineidae H. Adams & A. Adams, 1856
  * Bithyniidae Gray, 1857
  * Bythinellidae Locard, 1893
  * Caecidae Gray, 1850
  * Calopiidae Ponder, 1999
  * Clenchiellidae D. W. Taylor, 1966
  * Cochliopidae Tryon, 1866
  * Elachisinidae Ponder, 1985
  * Emmericiidae Brusina, 1870
  * Epigridae Ponder, 1985
  * Falsicingulidae Slavoshevskaya, 1975
  * Helicostoidae Pruvot-Fol, 1937
  * Hydrobiidae Stimpson, 1865
  * Hydrococcidae Thiele, 1928
  * Iravadiidae Thiele, 1928
  * Lithoglyphidae Tryon, 1866
  * Lithoglyphulidae Radoman, 1973
  * Moitessieriidae Bourguignat, 1863
  * Pomatiopsidae Stimpson, 1865
  * Spirostyliferinidae Layton, Middelfart, Tatarnic & N. G. Wilson, 2019
  * Stenothyridae Tryon, 1866
  * Tateidae Thiele, 1925
  * Tomichiidae Wenz, 1938
  * Tornidae Sacco, 1896 (1884)
  * Truncatellidae Gray, 1840
  * Vitrinellidae Bush, 1897
  * Unassigned to a family : Aenigmula Golding, 2014
  
  ### Synonyms
  
  * 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
  