original |
Gedinnian |
Siegenian |
Belgium |
Steemans,P. Stratigraphical study of the spores in the Gedinnian - Siegenian Transition Beds at Nonceveux and Spa, (Belgium). |
1981 |
original |
Late Gedinnian |
Middle Siegenian |
France(Ardennes) |
Steemans,P. The study of palynostratigraphy of the Devonian of western Europe. |
1986 |
original |
Late Famennian |
|
China(Kiangsu) |
Ouyang,S. et al. Miospore assemblages from the Devonian-Carboniferous transition in Jurong of Southern Jiangsu with special reference to the geological a age of the Wuntung Group |
1987 |