| details |
Eifelian |
Early Frasnian |
Canada |
McGregor,D.C. et al. Canadian and Australian Devonian spores: zonation and correlation |
1992 |
| details |
Eifelian |
Early Givetian |
Australia |
McGregor,D.C. et al. Canadian and Australian Devonian spores: zonation and correlation |
1992 |
| details |
Nd |
|
Nd |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |
| details |
Silurian |
Late Carboniferous |
Russia(Buryatia) |
Butov,Y.P. et al. Sagansairskaya Suita - Etalon Pozdnepaleozoisko - Mezozoiskoi Molassy Buryatskogo Vostochogo Sayana. |
2001 |