| original |
Ludlovian |
|
Algeria |
Jardin©,S. et al. Stratigraphic distribution of acritarchs in the Palaeozoic of the Algerian Sahara. |
1974 |
| details |
Dinantian |
|
S.Ireland(Clare) |
Clayton,G. et al. Micropalaeontology of a Courceyan, (Carboniferous), Borehole section from Ballyvergin, County Clare, Ireland. |
1980 |
| details |
Llandoverian |
Wenlockian |
Ireland |
Smith,D.G. Progress in Irish Lower Palaeozoic palynology. |
1981 |
| details |
Wenlockian |
Ludlovian |
England(Shropshire) |
Dorning,K.J. Silurian acritarchs from the type Wenlock and Ludlow of Shropshire, England. |
1981 |
| details |
Ludlovian |
|
Algeria |
Dorning,K.J. Silurian acritarchs from the type Wenlock and Ludlow of Shropshire, England. |
1981 |
| details |
Pridolian |
|
Spain |
Rodriguez Gonzalez,R.M. Palynology of the Upper Silurian-Lower Devonian Formations of the Cantabrica Cordillera, Northeast Spain. |
1983 |
| details |
Ludlovian |
|
Brazil(Para) |
Oliveira,S.F. et al. Silurian acritarchs from the Trombetas Formation, Amazon Basin |
1990 |
| details |
Ludlovian |
|
Jordan |
Keegan,J.B. et al. Palynostratigraphy of the Lower Palaeozoic, Cambrian to Silurian, sediments of the Hashemite Kingdom of Jordan. (In: Special Issue: Circum-Mediterranean Palynology. B.Owens and H.Visscher, editors) |
1990 |
| details |
Ludlovian |
|
Algeria |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |