Aylacostoma stigmaticum is a species of freshwater snail, aquatic gastropod mollusc in the family Hemisinidae. This species disappeared after the building of the Yacyretá Dam on the Paraná River, in between Argentina and Paraguay. Although listed as extinct in the wild by the IUCN, no captive population survives meaning that it now is entirely extinct.Vogler (2013). The Radula of the Extinct Freshwater Snail Aylacostoma stigmaticum (Caenofastropoda: Thiaridae) from Argentina and Paraguay. Malacologia 56 (1-2): 329-332.
See also List of non-marine molluscs of Argentina
References
External links Vogler R. E. (2013). "The Radula of the Extinct Freshwater Snail Aylacostoma stigmaticum (Caenogastropoda: Thiaridae) from Argentina and Paraguay". Malacologia 56(1-2): 329-332. .