| original |
Ordovician |
Early Ludlovian |
Belgium |
Martin,F. The acritarchs from the Belgian Ordovician and Silurian. Determination and stratigraphic value. |
1968 |
| details |
Caradocian |
|
Belgium |
Martin,F. et al. The Caradocian Flysch of Ombret. |
1970 |
| details |
Late Caradocian |
Early Llandoverian |
Belgium |
Martin,F. The Upper Ordovician and Lower Silurian at Deerlijk (Belgium) |
1973 |
| details |
Llanvirnian |
|
Belgium |
Martin,F. Cambrian-Ordovician acritarchs of the Massif du Brabant, Belgium. |
1975 |
| details |
Tremadocian |
Middle Ludlovian |
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. 2: Index to Parts 1 and 2. |
1977 |
| details |
Ordovician |
Silurian |
Bulgaria |
Kalvacheva,R.K. Acritarch stratigraphy of Lower Paleozoic formations in the West Balkan Mountains, Bulgaria. |
1978 |
| details |
Dinantian |
|
S.Ireland(Clare) |
Clayton,G. et al. Micropalaeontology of a Courceyan, (Carboniferous), Borehole section from Ballyvergin, County Clare, Ireland. |
1980 |
| details |
Tremadocian |
Llanvirnian |
France(Aude) |
Cocchio,A.M. Lower Paleozoic microflora of (Corbieres, Aude, France). |
1981 |
| details |
Arenigian |
|
Ireland |
Smith,D.G. Progress in Irish Lower Palaeozoic palynology. |
1981 |
| details |
Tremadocian |
|
France(Aude) |
Cocchio,A.M. New data on Tremadocian and Arenigian acritarchs of the Mouthoumet Massif, (Corbieres, France). |
1982 |
| details |
Late Ordovician |
|
Bulgaria |
Kalvacheva,R.K. Palynology and stratigraphy of the Diavase-Phyllitoid complex in the West Balkan Mountains. |
1982 |
| details |
Ordovician |
Silurian |
Bulgaria |
Sergeeva,L.A. et al. Micropaleophytological investigations of metamorphic formations of the Carpathian Balkan folded region. (In: Stratigraphy and Correlation of Sediments Using Palynology Methods. Materials IV All-Union Palynological Conference. G.N.Papulov, editor) |
1983 |
| details |
Llanvirnian |
|
United Kingdom |
Downie,C. Acritarchs in British stratigraphy |
1984 |
| details |
Caradocian |
|
Bulgaria |
Kalvacheva,R.K. Acritarch evidence for Ordovician System in West Bulgaria |
1984 |
| details |
Arenigian |
Llandeilian |
Belgium |
Vanguestaine,M. Advances in Cambro-Ordovician stratigraphy using acritarchs in Ardenne, Ireland, England, Wales and eastern Newfoundland. |
1986 |
| details |
Late Ordovician |
|
Czechoslovakia |
VavrdovЎ,M. Further acritarchs and terrestrial plant remains from the Late Orovician at Hlasna Treban (Czechoslovakia) |
1988 |
| 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 |