Anisus

Anisus is a genus of small air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the subfamily Planorbinae of the family Planorbidae, the ramshorn snails and their allies.

==Species== The genus contains the following species: Extant Anisus bachlongviensus Saurin, 1960 Anisus centrogyratus (Westerlund, 1875) Anisus leucostoma (Millet, 1813) Anisus pauxillus van Benthem Jutting, 1963 Anisus ressmanianus (Westerlund, 1875) Anisus sarasinorum (Bollinger, 1914) Anisus septemgyratus (Rossmässler, 1835) Anisus spirorbis (Linnaeus, 1758) - the type species of the genus Anisus strauchianus (Clessin, 1884) Anisus vortex (Linnaeus, 1758) Anisus vorticulus (Troschel, 1834) Extinct † Anisus altaicus Popova & Starobogatov, 1970 † Anisus angulatus (Clessin, 1877) † Anisus arltungae McMichael, 1968 † Anisus balizacensis (Peyrot, 1932) † Anisus bicarinatus Szőts, 1953 † Anisus brunnensis (Sauerzopf, 1953) † Anisus coislinensis (Sauerzopf, 1953) † Anisus confusus Soós, 1934 † Anisus densecostatus Schütt, 1994 † Anisus deviatkini Popova & Starobogatov, 1970 † Anisus dupuyianus (Noulet, 1854) † Anisus falsani (Locard, 1883) † Anisus guerichi (Andreae, 1902) † Anisus gulmargensis Bhatia, 1975 † Anisus hilgendorfi (Fraas, 1868) † Anisus karkaraensis (Schlosser, 1906) † Anisus komarovae Prysjazhnjuk, 1974 † Anisus krambergeri (Halaváts, 1903) † Anisus laskarevi Milošević, 1976 † Anisus lentiformis Popova & Starobogatov, 1970 † Anisus lungershauseni Popva & Starobogatov, 1970 † Anisus mariae (Michaud, 1862) † Anisus metochiensis Milošević, 1976 † Anisus nechoroshevi Popova & Starobogatov, 1970 † Anisus omalus (Bourguignat, 1881) † Anisus paritus Y.-T. Li, 1986 † Anisus pseudoplanulatus Szőts, 1953 † Anisus pseudosubangulatus Szőts, 1953 † Anisus racovetzae Popova & Starobogatov, 1970 † Anisus ressmanianus (Westerlund, 1875) † Anisus rousianus (Noulet, 1854) † Anisus saddaritanus (Pallary, 1901) † Anisus septemgyratiformis (Gottschick, 1911) † Anisus subanguloides H.-J. Wang, 1982 † Anisus thomasi (Pallary, 1901) † Anisus trapeziiformis Popova & Starobogatov, 1970 † Anisus tuerykensis Popova & Starobogatov, 1970 † Anisus vorticoides (Martinson, 1954) † Anisus weizhouensis H.-J. Wang, 1982 Uncertain (Taxon Inqurendum) Anisus dietmari Schütt, 1973 Anisus issykulensis (Clessin, 1907) Anisus calculiformis (Sandberger, 1874) Subspecies and species brought into synonymy (Selection): Subgenus Anisus (Gyraulus) Agassiz in Charpentier, 1837: synonym of Gyraulus Charpentier, 1837 Anisus (Gyraulus) terekholicus Prozorova & Starobogato, 1997: synonym of Gyraulus terekholicus (Prozorova & Starobogatov, 1997) Subgenus † Anisus (Odontogyrorbis) Lörenthey, 1906: synonym of Anisus (Anisus) Studer, 1820 Subgenus Anisus (Spiralina) Martens, 1899: synonym of Anisus Studer, 1820 † Anisus angustigyratus (Sauerzopf, 1953): synonym of † Anisus (Anisus) krambergeri (Halaváts, 1903) † Anisus dupuyanus (Noulet, 1854): synonym of † Anisus dupuyianus (Noulet, 1854) Anisus septemgyratus auct. (not Rossmässler): synonym of Anisus calculiformis (Sandberger, 1874) Anisus tokyoensis Mori, 1938: synonym of Gyraulus tokyoensis (Mori, 1938)