Palynological zonation of the Givetian-Frasnian stratigraphic interval in the Timan-Northern Urals region

The zonal scheme of the Givetian-Frasnian boundary interval in the Timan-Northern Urals region was detailed according to the higher plants spores. Palynological zones were correlated with faunal, including conodont - orthostratigraphic group in the Devonian. The correlation of the identified critical boundaries in the development of plant communities with the divisions’ borders of the International Stratigraphic Scale - series and stages, were established and options for the level of the border of the Middle and Upper Devonian in the regional stratigraphic scheme of the new generation were considered.