(Dyris amazonicus)

This species was described in 1949; it is known from only five specimens that were collected in the lower part of the Tapajos River near Belterra in the state of Pará, Brazil.

The species is only known from empty shells, life individuals were never found; it was furthermore never found since its description and appears to be extinct now.

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References:  

[1] F. P. Wesselingh: On relict hydrobiid species in Brazilian Amazonia (Gastropoda, Prosobranchia, Hydrobiidae). Basteria 64: 129-136. 2000

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edited: 29.01.2024