Stratigraphy of the boundary frasnian-fammenian deposits of r. Sharyu (Chernyshev swell)

The article presents new information concerning taxonomic composition of the biota of the Upper Devonian deposits of the river Sharyu. By studying a collection of conodonts and brachiopods the stratigraphic position of the section was clarified. The fauna propagation analysis revealed that the boundary between Frasnian and Famennian stages is opened twice in this outcrop. This fact is explained by complex tectonics of the Chernyshev swell.