Abstract
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.
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