| original |
Arenigian |
|
Czechoslovakia |
VavrdovЎ,M. Palaeozoic microplankton from central Bohemia. |
1966 |
| details |
Tremadocian |
Early Ludlovian |
Belgium |
Martin,F. The acritarchs from the Belgian Ordovician and Silurian. Determination and stratigraphic value. |
1968 |
| details |
Late Arenigian |
Early Llanvirnian |
England(Cumberland) |
Lister,T.R. et al. Microfossils from the Cleaved Skiddaw Slates of Murton Pike and Brownber (Cross Fell Inlier). |
1969 |
| details |
Arenigian |
Llanvirnian |
Belgium |
Martin,F. On the age of the shales of the Caledonian Belt of the Sambre-Meuse at Ombret. |
1969 |
| details |
Middle Ordovician |
|
France(Mayenne) |
Chauvel,J.J. et al. Discovery of an association of iron-ore microplankton in the Ordovician of the north side of the Laval Basin (Mayenne). Petrographic and micropaleontologic study. |
1970 |
| details |
Caradocian |
|
Belgium |
Martin,F. et al. The Caradocian Flysch of Ombret. |
1970 |
| details |
Arenigian |
|
Czechoslovakia |
VavrdovЎ,M. Acritarchs from Klabava Shales (Arenig). |
1972 |
| details |
Tremadocian |
|
France(Herault) |
Rauscher,R. Micropaleontological and stratigraphic research in the Ordovician and Silurian in France. Study of the acritarchs, chitinozoans and spores. |
1973 |
| details |
Late Caradocian |
Early Llandoverian |
Belgium |
Martin,F. The Upper Ordovician and Lower Silurian at Deerlijk (Belgium) |
1973 |
| details |
Nd |
|
Nd |
Vanguestaine,M. Zone species of acritarchs from the Cambro-Tremadocian of Belgium and the French Ardennes. |
1974 |
| details |
Arenigian |
|
Czechoslovakia |
Deunff,J. et al. New observations and details on Lower Paleozoic acritarchs with large polar apertures. |
1974 |
| details |
Arenigian |
|
Czechoslovakia |
Deunff,J. et al. New observations and details on Lower Paleozoic acritarchs with large polar apertures. |
1974 |
| details |
Late Arenigian |
|
England(Cumberland) |
Arthurton,R.S. et al. Ordovician and Silurian. (In: Geology of the Country around Penrith.) |
1981 |
| details |
Arenigian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |