| details |
Arenigian |
|
Ireland |
Smith,D.G. Progress in Irish Lower Palaeozoic palynology. |
1981 |
| details |
Tremadocian |
Arenigian |
France(Aude) |
Cocchio,A.M. New data on Tremadocian and Arenigian acritarchs of the Mouthoumet Massif, (Corbieres, France). |
1982 |
| details |
Tremadocian |
Arenigian |
France(Lot-et-Garonne) |
Baudelot,S. et al. Paleozoic basins hidden under the Aquitaine: Micropaleontological study of core collected during petroleum investigations. (In: Program of deep geology of France first phase of investigation-1983-1984) |
1984 |
| details |
Arenigian |
|
Italy(Sardinia) |
Albani,R. et al. New palynological data and geological considerations on the age of the Solanas Sandstone (Cambrian-Ordovician-Central Sardinia) |
1985 |
| details |
Arenigian |
Llanvirnian |
Morocco |
Fournier-Vinas,C. Ordovician acritarchs of Zekkara, (East Morocco). |
1985 |
| details |
Late Tremadocian |
Early Arenigian |
Italy(Sardinia) |
Pittau Demelia,P. Tremadocian (Early Ordovician) acritarchs of the Arburese Unit southwest Sardinia, (Italy). |
1985 |
| details |
Tremadocian |
|
Norway |
Welsch,M. The acritarchs of the Upper Digermul Group, Middle Cambrian to Tremadoc, Eastern Finnmark, Northern Norway. |
1986 |
| details |
Early Tremadocian |
|
Norway |
Welsch,M. Palynological investigation (acritarchs) in Cambrian and Tremadocian sediments of Eastern Finnmark (Norway). |
1986 |
| details |
Late Arenigian |
|
Portugal |
Cunha,T.Q.E. et al. Acritarchs of the "Xistos Com Phyllodocites" Formation, Barrancos Region, southeast of Portugal. |
1988 |
| details |
Tremadocian |
Arenigian |
France(Aude) |
Bessiere,G. et al. The Lower Palaeozoic in the Mouthoumet Massif (Aude, France) replaced in the South Hercynian area; Revision and implications. |
1988 |
| details |
Tremadocian |
|
Italy(Sardinia) |
Barca,S. et al. New geological and stratigraphical data and discovery of Lower Ordovician acritarchs in the San Vito Sandstone of the Genn'Argiolas Unit (Sarrabus, Southeastern Sardinia) |
1989 |
| details |
Nd |
|
Nd |
Albani,R. Ordovician, (Arenigian) acritarchs from the Solanas Sandstone Formation, Central Sardinia, Italy. |
1989 |
| details |
Tremadocian |
Arenigian |
Spain |
Mette,W. Acritarchs from Lower Paleozoic rocks of the Western Sierra Morena, southwest Spain and biostratigraphic results. |
1989 |
| details |
Late Cambrian |
Early Ordovician |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Arenigian |
|
China(Shansi) |
Fang,X. Ordovician microflora from Ningqiang (Shaanxi) and Guangyuan (Sichuan) and its sedimentary environment. |
1990 |
| details |
Arenigian |
|
China(Szechwan) |
Fang,X. Ordovician microflora from Ningqiang (Shaanxi) and Guangyuan (Sichuan) and its sedimentary environment. |
1990 |
| details |
Llanvirnian |
Baoto |
China(Szechwan) |
Lai,C.-G. et al. Restudy on Ordovician of Southern Shaanxi-Northern Sichuan areas. |
1990 |