| details |
Gedinnian |
|
France(Ardennes) |
Steemans,P. The study of palynostratigraphy of the Devonian of western Europe. |
1986 |
| details |
Llanvirnian |
|
Czechoslovakia |
VavrdovЎ,M. New genera of acritarchs from the Bohemian Ordovician. |
1986 |
| details |
Early Soudleyan |
|
Wales(Powys) |
Cave,R. et al. Age of the Ordovician Andesitic Conglomerate of Castle Hill, Montgomery, Powys, Wales |
1988 |
| details |
Nd |
|
Nd |
Gray,J. et al. Is Moyeria a Euglenoid ? |
1989 |
| details |
Llandoverian |
Pridolian |
France(Ardennes) |
Steemans,P. Paleogeography of the Eo-Devonian of Ardennes and Surrounding Regions |
1989 |
| details |
Late Llandoverian |
|
New York |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |