TY JOUR TI Stromatolites in the Upper Visean sediments of the Pacha-Lasta section (Ilych River, Northern Urals) KW stratigraphy KW paleogeography KW foraminifera KW stromatolites KW Visean KW Northern Urals JO Vestnik of geosciences AU Shadrin, A.N. AU Ivanova, R.M. AU Ponomarenko, E.S. PY 2024 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"