Paleozoic stratisphere of north-eastern Europe: stratigraphic correlation, biogeoevent history, evolution of marine paleoecosystems

The paleoecosystem studies of a number of groups of filtering organisms: tabulates, rugoses, brachiopods and ostracodes in marine Paleozoic basins on the territory of European North-East resulted in finding the basic regularities of their formation and development stages. The important role of event phenomena in the community changes, conditioned mostly by eustatic fluctuations of sea level, is shown.