| details |
Early Langsettian |
|
England(Derbyshire) |
Turner,N. et al. A palynostratigraphic study of Namurian-Westphalian Deltaic Sequences of the Southern Central Pennine Basin, Derbyshire England. |
1993 |
| details |
Duckmantian |
|
England(Yorkshire) |
Cottnam,C.F. et al. Diversity of exine structure in Upper Carboniferous (Westphalian) selaginellalean megaspores. |
2000 |
| details |
Namurian C |
Westphalian C |
Poland |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| original |
Namurian C |
Westphalian C |
Poland |
Karczewska,J. Megaspores of the Turma Zonales from the Carboniferous of Poland. Part 2 |
1976 |