See LOC187 and LOC188: Section samples of Kuzina 1980 and Kuzina & Konovalova, 2004:

   1980  Kuzina, text-fig.2: Section of the early Carboniferous strata with goniatites at the Kozhim river, Northern Urals.
    2004 Kuzina & Konovalova, 2004, Fig.2, Tournaisian--Visean boundary.