| original |
Cambrian |
Tremadocian |
Italy |
Kalvacheva,R.K. et al. Acritarch evidence for the Cambrian age of Phyllites in the Agordo area (South-Alpine Basement of eastern Alps, Italy). |
1986 |
| details |
Late Ordovician |
Devonian |
Algeria |
Ilavsky,J. et al. Presence of Paleozoic acritarchs in metamorphic rocks of the Edough Massif (Wilaya of Annaba, eastern Algeria) |
1987 |
| details |
Late Llandoverian |
|
Czechoslovakia |
Dufka,P. et al. Upper Llandoverian acritarchs from Karlstejn, Barrandian area Bohemian Massif |
1988 |
| details |
Middle Devonian |
|
Canada(Ontario) |
Eley,B.E. et al. Cherts of Southern Ontario |
1989 |
| details |
Ludlovian |
|
Brazil(Para) |
Oliveira,S.F. et al. Silurian acritarchs from the Trombetas Formation, Amazon Basin |
1990 |
| details |
Eifelian |
|
Bolivia |
Wood,G.D. Togachitina, a new bilayered chitinozoan genus from the Devonian of the Sierras Subandinas Region, Bolivia. |
1994 |
| details |
Llandoverian |
|
Kentucky |
Wood,G.D. Possible evidence for life cycle stages in Lower Silurian organic-walled microphytoplankton, Kentucy, U.S.A. |
1994 |
| details |
Late Llandoverian |
Wenlockian |
North America |
Le H©riss©,A. Biogeography of upper Llandovery and Wenlock acritarchs. |
1995 |
| details |
Late Llandoverian |
Wenlockian |
Sweden(Gotland) |
Le H©riss©,A. Biogeography of upper Llandovery and Wenlock acritarchs. |
1995 |
| details |
Late Llandoverian |
Wenlockian |
Greenland |
Le H©riss©,A. Biogeography of upper Llandovery and Wenlock acritarchs. |
1995 |
| details |
Late Llandoverian |
Wenlockian |
Belgium |
Le H©riss©,A. Biogeography of upper Llandovery and Wenlock acritarchs. |
1995 |
| details |
Late Arenigian |
|
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 |
Givetian |
Frasnian |
Bolivia |
Wood,G.D. The acritarch Proteolobus wallii, gen.et sp.nov., from the Devonian Iquiri Formation of Bolivia: A possible coenobial alga. |
1997 |
| details |
Ashgillian |
|
China(Zhejiang) |
Yin,L. et al. Palynomorphs from the transitional sequences between Ordovician and Silurian of northwestern Zhejiang, South China. |
2000 |