| details |
Ashgillian |
Early Llandoverian |
Belgium |
Martin,F. The Upper Ordovician and Lower Silurian at Deerlijk (Belgium) |
1973 |
| original |
Early Llandoverian |
|
Belgium |
Martin,F. The Upper Ordovician and Lower Silurian at Deerlijk (Belgium) |
1973 |
| details |
Idwian |
Telychian |
Austria |
Martin,F. On some Llandoverian acritarchs of Cellon (Central Carnic Alps, Austria) |
1978 |
| details |
Early Llandoverian |
|
Belgium |
Martin,F. On some Llandoverian acritarchs of Cellon (Central Carnic Alps, Austria) |
1978 |
| details |
Early Llandoverian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |