| details |
Arenigian |
|
Czechoslovakia |
VavrdovЎ,M. Ordovician acritarchs from Central Bohemia. |
1965 |
| details |
Tremadocian |
|
Baltic |
VavrdovЎ,M. Geographical differentiation of Ordovician acritarch assemblages in Europe. |
1974 |
| details |
Arenigian |
|
Colombia |
Thery,J.-M. et al. Discovery of Arenigian acritarchs from Araracuara, (Caqueta-Colombia). Reinterpretation of the Saliente del Vaupes Area. |
1986 |
| details |
Late Tremadocian |
|
England(Cumberland) |
Molyneux,S.G. et al. Discovery of Tremadoc rocks in the Lake District. |
1984 |
| details |
Late Tremadocian |
Early Arenigian |
England(Lancashire) |
Molyneux,S.G. et al. The age of the Watch Hill Grits, (Ordovician), English Lake District; Structural and palaeogeographical implications. |
1988 |
| details |
Late Tremadocian |
Early Arenigian |
Wales(Carmarthenshire) |
Molyneux,S.G. et al. Acritarchs dating of Latest Tremadoc - Earliest Arenig (Early Ordovician) sediments in the Carmarthen District, South Wales. |
1989 |
| details |
Tremadocian |
Early Ludlovian |
Belgium |
Martin,F. The acritarchs from the Belgian Ordovician and Silurian. Determination and stratigraphic value. |
1968 |
| details |
Tremadocian |
|
Algeria |
Jardin©,S. et al. Stratigraphic distribution of acritarchs in the Palaeozoic of the Algerian Sahara. |
1974 |
| details |
Ashgillian |
|
China(Zeijing) |
He,S.-C. et al. Late Ordovician acritarchs from changwu Formation of Jiangshan, Zhejiag, China |
1993 |
| details |
Tremadocian |
Arenigian |
France(Tarn) |
Fournier-Vinas,C. Cambro-Ordovician acritarchs from the Lacaune Mountains, (North of the Black Mountains, France). |
1978 |
| details |
Tremadocian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Llandeilian |
Early Caradocian |
S.Ireland(Galway) |
Emo,G.T. et al. Palynological evidence for the age of the Lower Palaeozoic rocks of Slieve Aughty, Counties Clare and Galway. |
1978 |
| details |
Late Llandeilian |
Early Caradocian |
S.Ireland(Clare) |
Emo,G.T. et al. Palynological evidence for the age of the Lower Palaeozoic rocks of Slieve Aughty, Counties Clare and Galway. |
1978 |
| details |
Tremadocian |
|
Algeria |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Tremadocian |
|
Belgium |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Arenigian |
|
Belgium |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Llanvirnian |
|
Belgium |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |