| details |
Early Caradocian |
Middle Caradocian |
USSR(Estonian SSR) |
Uutela,A. et al. Ordovician acritarchs from the Rapla borehole, Estonia |
1991 |
| details |
Wenlockian |
Ludlovian |
Saudi Arabia |
Fauconnier,D. Palynological study of Formations of Tertiary Upper Cretaceous, Devonian, Silurian, and Ordovician intersected in 11 boreholes in Northwestern of Royaume, Saudi Arabia (RS.1717) |
1984 |
| details |
Arenigian |
Llanvirnian |
Morocco |
Fournier-Vinas,C. Ordovician acritarchs of Zekkara, (East Morocco). |
1985 |
| details |
Arenigian |
Llanvirnian |
Mediterranean Sea |
VavrdovЎ,M. Geographical differentiation of Ordovician acritarch assemblages in Europe. |
1974 |
| details |
Late Arenigian |
Llanvirnian |
Czechoslovakia |
VavrdovЎ,M. Excystment mechanism of Early Paleozoic acritarchs. |
1976 |
| details |
Late Arenigian |
Llanvirnian |
Czechoslovakia |
VavrdovЎ,M. Acritarchs from the Sarka Formation (Llanvirnian). |
1977 |
| details |
Llanvirnian |
Llandeilian |
Libya |
Deunff,J. et al. Cambrian to Ordovician palynology and stratigraphy (Northwest Libya). |
1975 |
| details |
Late Arenigian |
Late Ashgillian |
Czech Republic |
Wang,W.-M. Paleofloristic and paleoclimatic implications of Neogene palynofloras in China |
1994 |
| details |
Late Cambrian |
Early Ordovician |
Canada(Quebec) |
Lavoie,D. et al. Stratigraphic framework for the Cambrian-Ordovician rift and passive margin successions from southern Quebec to western Newfoundland. |
2003 |
| details |
Late Arenigian |
Early Llanvirnian |
Sweden |
Ribecai,C. et al. Arenigian acritarch from Horns Udde (Oland, Sweden). A preliminary report. |
1995 |
| details |
Late Arenigian |
Early Llanvirnian |
China(Guizhou) |
Brocke,R. et al. Upper Arenigian to Lower Llanvirnian acritarch assemblages from South China: a preliminary evaluation. |
2000 |
| details |
Late Arenigian |
Early Llanvirnian |
China(Hupei) |
Brocke,R. et al. Upper Arenigian to Lower Llanvirnian acritarch assemblages from South China: a preliminary evaluation. |
2000 |
| details |
Late Arenigian |
Early Llanvirnian |
China(Szechwan) |
Brocke,R. et al. Upper Arenigian to Lower Llanvirnian acritarch assemblages from South China: a preliminary evaluation. |
2000 |
| details |
Late Arenigian |
Early Llanvirnian |
Czech Republic |
Fatka,O. Organic-walled microfossils (Chitinozoa and Acritarcha) from Praha - Cervenн vrch Hill (SЎrka Formation, Middle Ordovician, Prague Basin) |
2003 |
| details |
Llanvirnian |
Baoto |
China(Szechwan) |
Lai,C.-G. et al. Restudy on Ordovician of Southern Shaanxi-Northern Sichuan areas. |
1990 |
| details |
Llanvirnian |
Baoto |
China(Shansi) |
Lai,C.-G. et al. Restudy on Ordovician of Southern Shaanxi-Northern Sichuan areas. |
1990 |
| details |
Arenigian |
Ashgillian |
Algeria |
Jardin©,S. et al. Stratigraphic distribution of acritarchs in the Palaeozoic of the Algerian Sahara. |
1974 |