| details |
Late Stephanian |
Middle Permian |
Europe |
Alpern,B. The stratigraphic palynology of the Stephanian and the Permian. |
1964 |
| details |
Stephanian |
Permian |
Nd |
Alpern,B. Stratigraphic palynology of the Stephanian and Permian. |
1964 |
| details |
Middle Carboniferous |
Late Carboniferous |
USSR(Kazakh SSR) |
Aksenova,G.G. et al. Ecological types of associated fauna and flora and rules of their distribution in coal deposits of the Ekibastuz Basin. (In: Environments and life in the geological past, problems of Ecostratigraphy.) |
1979 |