Home – Home – Jornals – Russian Geology and Geophysics 2018 number Неопубликованное

The article presents the results of the analysis of the geographical distribution and taxonomic diversity of dinoflagellate cysts in the Campanian of the Northern Hemisphere. Three types of dinocyst assemblages were established based on the qualitative and quantitative assessment of their generic composition. A wide distribution of some stratigraphically important genera and species, which previously had narrower habitats, was revealed due to transgressive events, expansion of interbasin connections, and the presence of multidirectional meridional currents. The possibility of comparing the North Siberian dinocyst assemblages with those from the stratotypes containing the orthostratigraphic faunal groups of the West European and North American Campanian deposits through the ekaton sections of the Subpolar Cis-Urals and the south of Western Siberia was shown.