Genesis fauna oligochaetes worms in the North of Europe

Genetically fauna oligochaetes worms northern Europe relative young, it was generated 13-15 thousand years ago in a palaeozoic. During the tertiary period, when Europe, Asia and North America have repeatedly incorporated, Galactic have occupied mobile kinds of oligochaete from families Naidida, Jubificidae and Lumbriculidae. The quarternary freezing was strongly reflected on connatural-climatic shape of Scandinavia, caused penetration here kinds of east origin. Having had severe environmental conditions of Polearctic, many oligochaetes have endured changes in the a morphological structure which gave rise to formation of new kinds. Most oligochaetes worms moving activity occurs recently in the European North.