| original |
Late Gedinnian |
Emsian |
Poland |
Turnau,E. Lower to Middle Devonian spores from the vicinity of Pionki, (central Poland). |
1986 |
| details |
Late Siegenian |
Early Emsian |
Poland |
Turnau,E. et al. Early Devonian miospores and age of the Zwolen Formation (Old Red Sandstone Facies) from Ciepielow IG-1 Borehole. |
1989 |
| details |
Strunian |
Early Tournaisian |
Canada(Saskatchewan) |
Playford,G. et al. Miospores and organic-walled microphytoplankton of Devonian-Carboniferous boundary beds, (Bakken Formation), southern Saskatchewan: A systematic and stratigraphic appraisal. |
1993 |
| details |
Late Givetian |
Frasnian |
Iran |
Ghavidel-Syooki,M. Biostratigraphy and paleo-biogeography of some Paleozoic rocks at Zagros and Alborz Mountains. |
1994 |