| details |
Middle Visean |
Late Visean |
USSR(Ukrainian SSR) |
Teteryuk,V.K. Stratigraphic separation of Lower Carboniferous deposits of the western part of the Donbas by spores and pollen |
1960 |
| details |
Visean |
|
USSR(Kazakh SSR) |
Andreeva,E.M. Spore and pollen assemblages in Upper Proterozoic and Paleozoic deposits of some Regions of the USSR |
1962 |
| details |
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 |
Visean |
|
Arctic Ocean |
Kaiser,H. The Upper Devonian flora of Bear Island. 3. Microflora of the Uppermost Upper Devonian and Lower Carboniferous. |
1970 |
| details |
Middle Visean |
|
USSR(Ukrainian SSR) |
Biryulev,A.Y. et al. Basal Formations of the Middle Visean Substage in the Lvov-Volyn Basin |
1974 |