title: GEOGRAPHICAL EXPANSION AND NUMBER OF THE GAZETTE IN UKRAINE
abstract: Medium-sized molluscs of Viviparus viviparus (Linnaeus, 1758) and Viviparus contectus (Millet, 1810) pertaining to the family Viviparidae Gray, 1847.This is a fairly ancient group of freshwater mollusks, known from the Carboniferous period, now they are distributed in the fresh water bodies of North America and Eurasia. Viviparus vivіparus (Linnaeus, 1758) - the most widely expanded species of the genus. The areal covers almost all of Europe, as well as the entire territory of Ukraine. The shell
journal: BIOLOGY & ECOLOGY