| details |
Arenigian |
Llanvirnian |
Germany(Saxony) |
Walter,H. et al. Paleozoic microfossils from the northern Margin of the Erzgebir Mountains, (Saxony). |
1998 |
| details |
Arenigian |
Llanvirnian |
Baltic |
Tongiorgi,M. et al. Differentiation and spread of the Baltic Acritarch Province (Arenig-Llanvirn). |
1999 |
| details |
Llanvirnian |
Caradocian |
Saudi Arabia |
Molyneux,S.G. et al. Palynology of a problematic lower Palaeozoic lithofacies in the central Arabian Basin, Saudi Arabia. |
2000 |
| details |
Late Tremadocian |
|
China |
Li,J. et al. Ordovician acritarchs of China and their utility for global palaeobiogeography. |
2002 |
| details |
Middle Ordovician |
|
Gondwanaland |
Li,J. et al. ################ |
2003 |