| details |
Late Eifelian |
Early Givetian |
USSR(Baltic) |
Vaitekunene,G.K. Spore complexes of the Pyarnu and Narova horizons in the southern part of the Balticum. (In:-Palynological Researches in the Baltic Soviet Republics. T.D.Bartosh, editor) |
1971 |
| details |
Early Devonian |
|
USSR(Lithuanian SSR) |
Vaitekunene,G.K. Spores. Lower Devonian of Lithunia. (In: Devon i Karbon Pribaltiki. V.S.Sorokin et al, editors) |
1981 |
| details |
Tournaisian |
|
USSR(Ukrainian SSR) |
Vosanchuk,S.S. et al. The Devonian stratigraphy of the Southern Marginal Zone of the Dneiper-Donets Basin. |
1962 |
| details |
Early Devonian |
Middle Devonian |
China(Kansu) |
Ye,X. On the occurrence of spore assemblages from the Shujiaba Region of Tianshui County, Gansu and their stratigraphical significance |
1986 |