| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| details | Namurian A | Poland | Knafel,S. et al. Zones of megaspore changes in Namurian a of the north eastern part of the Upper Silesian Coal Basin. (In: Geological Research in the Silesian-Cracovian Region.) | 1979 | |
| details | Early Visean | Early Westphalian A | Poland | Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. | 1980 |