00516naa#a2200169#i#450# EN\\bibl\57625 20260603132857.3 2712-7761 20230310b2023####ek#y0engy0150####ca RUS RU About Middle-Upper Devonian boundary Journal article Syktyvkar FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences" 2023 2 с. Journal article local Tel'nova O. P. ras.editorum.ru