Genesis of the oligochaeta worms fauna on the north of Europe

Peculiarities of oligochaeta fauna genesis on the North of Europe are substantiated theoretically. It is demonstrated that oligochaeta worms permeate into this territory during the last 13-15 thousands years. The rivers Don, Dniepr and Danube were extremely important for the genesis of oligochaeta on the North of Europe. The Siberian rivers, which also contributed the propagation of the North-Eastern elements of fauna, were also significant. The main ways of oligochaeta fauna genesis were water basins, which appeared near glaciers after the glaciers had flowed away, and the human activities after end of glacial epoch.