Theodoxus euxinus
Theodoxus euxinus is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites. Distribution The distribution of this species includes: Ukraine Romania Greece The type locality is Dobrogea, Romania. Description The shell is shiny, smooth, with a coarse white ziczac pattern. The width of the shell is 6–8 mm. Ecology This species occurs in woodlands of the Danube Delta region, on rocks, and on sandy or muddy substrates. References This article incorporates public domain text from the reference Neritidae Molluscs of Europe Gastropods described in 1886