| details |
Ashgillian |
|
Ohio |
Taylor,W.A. Ultrastructure of Tetrahedraletes medinensis (Strother and Traverse) Wellmand and Richardson, from the Upper Ordovician of Southern Ohio |
1995 |
| details |
Ashgillian |
|
Iran |
Ghavidel-Syooki,M. Acritarch biostratigraphy of the Palaeozoic rock units in the Zagros Basin, Southern Iran. (In: Commision Internationale de microflore du Paleozoique (CIMP) Acritarch Subcommision: O.Fatka and T.Servais, editors) |
1996 |
| details |
Ashgillian |
|
China(Sinkiang Uighur) |
Wang,Y. et al. Latest Ordovician Cryptospores from Southern Xinjiang, China |
1997 |
| details |
Ashgillian |
Llandoverian |
China(Zhejiang) |
Yin,L. et al. Palynomorphs from the transitional sequences between Ordovician and Silurian of northwestern Zhejiang, South China. |
2000 |
| details |
Ashgillian |
|
Belgium |
Steemans,P. Ordovician cryptospores from the Oostduinkerke Borehole, Brabant Massif, Belgium. |
2001 |
| details |
Ashgillian |
Pridolian |
Canada(Nova Scotia) |
Beck,J.H. et al. Silurian spores and cryptospores from the Arisaig Group, Nova Scotia, Canada. |
2001 |