| details |
Namurian A |
Early Westphalian A |
Virginia |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Namurian C |
Westphalian B |
Poland |
Zoldani,E. Preliminary results of the study of megaspores from Bore-Hole samples from the Regions of Cwiklice-Miedzyrzecze-Biern. |
1964 |
| details |
Namurian A |
|
Kentucky |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Frasnian |
|
England(Bedfordshire) |
Mortimer,M.G. et al. Devonian megaspores from the Wyboston borehole, Bedfordshire, England |
1967 |