| original |
Early Carboniferous |
|
USSR(Moscow Basin) |
Dijkstra,S.J. et al. Lower Carboniferous megaspores from the Moscow Basin. |
1957 |
| details |
Namurian A |
|
Scotland(Ayr) |
Sen,J. The megaspores of the Ayrshire Coalfield and their stratigraphic value. |
1964 |
| details |
Early Tournaisian |
Namurian C |
USSR(Ukrainian SSR) |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Early Tournaisian |
Namurian C |
England |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |