| details |
Silurian |
Early Devonian |
USSR(Permsk Oblast) |
Lagutenkova,N.S. et al. New data on Old rocks in the Yaborovskaya area in the northeastern part of the Perm Oblast |
1977 |
| details |
Vendian |
|
USSR(Permsk Oblast) |
Lagutenkova,N.S. et al. Separation of Lower Paleozoic deposits in the northeastern Perm District. (In: Voprosy biostratigrafii i Paleogeografii Neftegazonosnykh Oblastei SSSR.) |
1977 |
| details |
Vendian |
|
USSR(Ukrainian SSR) |
Velikanov,V.A. The Vendian of the Podolian Region-The Bolyn-Podolian Slope of the East-European Platform. (In: Stratigraphy of Upper Precambrian and Cambrian deposits on the western part of the East European Platform. B.M.Keller and A.Y.Rozanov, editors) |
1979 |