Parafossarulus crassitesta is an extinct species of freshwater snail with gills and an operculum, an aquatic prosobranch gastropod mollusk in the family Bithyniidae.
Glöer (2002)Glöer P. (2002). Die Süßwassergastropoden Nord- und Mitteleuropas. Die Tierwelt Deutschlands, ConchBooks, Hackenheim, 326 pp., , page 190-194. reassigned two European extinct species of Parafossarulus as a subgenus of the genus Bithynia, but genus Parafossarulus is generally accepted for Asian species.
Distribution This species occurred in Europe in the Pleistocene Epoch.
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