| details |
Early Llanvirnian |
|
Wales(Anglesey) |
Fenton,J.P.G. Palynological evidence for the age of the Dulas Formation (Ordovician) in Anglesey (North Wales). |
1976 |
| original |
Late Ordovician |
|
Czechoslovakia |
VavrdovЎ,M. Some plant microfossils of possible terrestrial origin from the Ordovician of Central Bohemia. |
1984 |
| details |
Llanvirnian |
|
E.Germany(Rostock) |
Servais,T. The Ordovician acritarchs from Rugen, (Northeast Germany), palaeobiogeographical evidence for the attribution to eastern Avalonia. |
1994 |
| details |
Arenigian |
|
Germany(Saxony) |
Marek,J. et al. Revision of trilobites of the Griffelschiefer Formation (Ordovician, Schwarzburg anticline, Germany): preliminary results |
2003 |