| details |
Late Ludlovian |
|
Guinea |
Baudelot,S. et al. Presence of microplankton from Upper Ludlovian in the locality of Tomboya, (Gunea) |
1980 |
| details |
Ludlovian |
|
Romania |
Iordan,M. et al. Litho and biostratigraphy of the Paleozoic Sequences in the Oprisor and Girla Mare Boreholes, (southwestern part of the Moesian Platform). |
1985 |
| details |
Early Rhuddanian |
|
Czechoslovakia |
Dufka,P. Palynomorphs in the Llandovery black shale sequence of the Prague Basin (Barrandian area, Bohemia). |
1990 |
| details |
Ludlovian |
Emsian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Llandoverian |
|
Czechoslovakia |
Dufka,P. et al. Chitinozoans and acritarchs from the Ordovician - Silurian boundary of the Prague Basin, Czech Republic. (In: Contributions to Acritarch and Chitinozoan Research. S.G.Molyneux and K.J.Doring, editors) |
1993 |