| details |
Westphalian C |
Early Permian |
USSR(Ukrainian SSR) |
Teteryuk,V.K. et al. Spores and pollen of the Donets Basin Carboniferous and Lower Permian. (In: General Problems of the Carboniferous Stratigraphy) |
1978 |
| details |
Westphalian C |
Westphalian D |
USSR(Ukrainian SSR) |
Teteryuk,V.K. Namurian Stage analogues in the Carboniferous Period of the Donets Basin, (based on palynological data). |
1976 |
| details |
Stephanian |
|
W.Germany(Baden) |
Buntebarth,G. et al. Coalification studies in the research borehole Urach 3 and their geothermal interpretation. |
1979 |