| details |
Frasnian |
|
Montana |
Sandberg,C.A. et al. Comparison between conodont zonations and spore assemblages at the Devonian-Carboniferous boundary in the Western and Central United States and in Europe |
1972 |
| details |
Devonian |
|
Nd |
Kedves,M. Trends and problems of the research of fossil spores and pollen grains |
1988 |
| details |
Frasnian |
|
China(Yunnan) |
Lu,L. Upper Devonian (Frasnian) spores from Sichuan and Yunnan, China. |
1980 |
| original |
Frasnian |
|
USSR(Russian Platform) |
Naumova,S.N. Spore-pollen complexes of the Upper Devonian of the Russian Platform and their significance for stratigraphy |
1953 |