| original |
Late Volkov |
Early Kunda |
Sweden |
Ribecai,C. et al. Quantitative biostratigraphy applied to Volkhov-Kunda Palynife, (Acritarchs) sequences of northern Oland. (In: Commision Internationale de microflore du Paleozoique (CIMP) Acritarch Subcommision: O.Fatka and T.Servais, editors) |
1996 |
| details |
Ashgillian |
Early Llandoverian |
Poland |
Masiak,M. et al. Ordovician-Silurian boundary in the Bardo Syncline, Holy Cross Mountains, Poland - New data on fossil assemblages and sedimentary succession. |
2003 |
| details |
Ashgillian |
Llandoverian |
Poland |
Masiak,M. et al. Ordovician-Silurian boundary in the Bardo Syncline, Holy Cross Mountains, Poland-new data on fossil assemblages and sedimentary succession. |
2003 |