Tanousia stenostoma is an extinct European species of freshwater snail with gills and an operculum, a gastropod mollusk in the family Lithoglyphidae.Glöer P. (2002). Die Süßwassergastropoden Nord- und Mitteleuropas. Die Tierwelt Deutschlands, ConchBooks, Hackenheim, 326 pp., ."Tanousia zrmanjae". Fauna Europaea, last update 27 January 2011, accessed 19 May 2011.
References
Further reading Esu D. & Gianolla D. (2008). "The occurrence of the genus Tanousia Servain (Mollusca, Gastropoda, Hydrobiidae) in the Middle Pleistocene Piànico-Sèllere Basin (Bergamo, Northern Italy)". Quaternary International 190(1): 4–9.