Assemblages of vertebrates and zones from the Upper Givetian and Lower Frasnian of the East European platform and Urals

The ichthyoassemblages from the Upper Givetian and Lower Frasnian deposits of the East European Platform and Urals. The Ichthyofaunistic zones established for the Main Devonian Field are traced in various subregions of the platform. The detailed phoebodontid zones of the Middle Urals are correlated to the Standard conodont zones.