| original |
Tournaisian |
Visean |
England |
Butterworth,M.A. et al. Lower Carboniferous spores from North-West England |
1967 |
| details |
Dinantian |
|
England |
Spinner,E. Megaspore assemblages from Visean deposits at Dunbar, East Lothian, Scotland. |
1969 |
| details |
Early Tournaisian |
Early Visean |
USSR(Ukrainian SSR) |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Early Tournaisian |
Early Visean |
England |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Late Arnsbergian |
Chokierian |
England(Northumberland) |
Turner,N. et al. Namurian (Arnbergian/Chokierian) megaspore assemblages from Northeast England |
1996 |