| original |
Early Visean |
|
USSR(Belorussian SSR) |
Kedo,G.I. Spores of the Lower Carboniferous of the Pripyat Trough, (Yasmopolyanskii Substage). (In: Paleontology and Stratigraphy of the BSSR) |
1966 |
| details |
Permian |
|
USSR(Krasnoyarsk Kray) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Early Visean |
Middle Visean |
USSR(Ukrainian SSR) |
Shulga,P.L. et al. On the Paleozoic deposits of the Belokorovich Skaya Graben-Syncline, (north-west part of the Ukrainian Shield). |
1982 |
| details |
Early Visean |
|
USSR(Ukrainian SSR) |
Shulga,P.L. et al. The Paleozoic Formations of the Belokorovichi Graben Syncline, northwestern Ukrainian Shield. |
1982 |
| details |
Early Visean |
Middle Visean |
USSR(Ukrainian SSR) |
Aseeva,E.A. et al. The palynological basis for the Paleozoic age of certain sections of the Ukrainiane dated as Early Precambrian. (In: Stratigraphy and Correlation of Sediments Using Palynology Methods. Materials IV All-Union Palynological Conference. G.N.Papulov, editor) |
1983 |