| details |
Late Cambrian |
Early Tremadocian |
Sweden |
Tongiorgi,M. et al. Late Cambrian and Tremadocian phytoplankton (Acritarchs) communities from Oland (Sweden). |
1990 |
| details |
Late Cambrian |
Tremadocian |
France(Ardennes) |
Steemans,P. Paleogeography of the Eo-Devonian of Ardennes and Surrounding Regions |
1989 |
| details |
Late Cambrian |
|
Algeria |
Vecoli,M. et al. Remarks on the Cambrian-Ordovician boundary in the Algerian Sahara (Hassi-Rmel area) |
1995 |
| details |
Late Cambrian |
|
Belgium |
Vanguestaine,M. Advances in Cambro-Ordovician stratigraphy using acritarchs in Ardenne, Ireland, England, Wales and eastern Newfoundland. |
1986 |
| details |
Late Cambrian |
Early Tremadocian |
Italy(Sardinia) |
Pittau,P. On the Cambrian - Ordovician limit in the Rhabdinopora flabellifo (Eichw.) bearing shales of the Iglesiente Platform: Accounts through acritarchs. |
1991 |
| details |
Late Cambrian |
|
Algeria |
Vecoli,M. Stratigraphic significance of acritarchs in Cambro-Ordovician boundary strata, Hassi-Rmel area, Algerian Sahara |
1996 |
| details |
Late Cambrian |
Early Tremadocian |
Canada(Newfoundland) |
Parsons,M.G. et al. Acritarch microfloral succession from the Late Cambrian and Ordovician (Early Tremadoc) of Random Island, Eastern Newfoundland, and its comparison to coeval microfloras, particularly those of the Eastern European Platform. |
2000 |
| details |
Late Gedinnian |
Middle Siegenian |
France(Ardennes) |
Steemans,P. The study of palynostratigraphy of the Devonian of western Europe. |
1986 |
| details |
Late Tremadocian |
Early Arenigian |
Italy(Sardinia) |
Pittau Demelia,P. Tremadocian (Early Ordovician) acritarchs of the Arburese Unit southwest Sardinia, (Italy). |
1985 |
| details |
Late Tremadocian |
Early Arenigian |
Italy(Sardinia) |
Pittau Demelia,P. Tremadocian (Early Ordovician) acritarchs of the Arburese Unit southwest Sardinia, (Italy). |
1985 |
| details |
Merioneth |
|
Sweden |
Di Milia,A. et al. Late Cambrian acritarchs from the Peltura scarabaeoides Trilobite Zone at Degerhamn (Oland, Sweden). |
1989 |
| details |
Ordovician |
Silurian |
Romania |
Stanoiu,I. et al. Metamorphosed Paleozoic and Mesozoic Formations of the Mehedinti-Retezat Unit |
1983 |
| details |
Tremadocian |
|
France(Aude) |
Cocchio,A.M. Lower Paleozoic microflora of (Corbieres, Aude, France). |
1981 |
| details |
Tremadocian |
|
France(Aude) |
Cocchio,A.M. New data on Tremadocian and Arenigian acritarchs of the Mouthoumet Massif, (Corbieres, France). |
1982 |
| details |
Tremadocian |
|
Algeria |
Baudelot,S. et al. Discovery of the Lower Ordovician, dated by acritarchs, on the East of the Petite Kabylie (Algeria); Structural consequences. |
1981 |
| details |
Tremadocian |
|
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 |
| original |
Tremadocian |
|
France(Herault) |
Martin,F. Acritarchs of the Lower Ordovician of the Montagne Noire (Herault, France). |
1972 |