| details |
Early Tremadocian |
|
Algeria |
Combaz,A. A microbiota of the Tremadocian in a drilling of Hassi-Messaoud. |
1967 |
| details |
Late Cambrian |
|
Romania |
Solomon,I. et al. Considerations on the crystalline and anchimetamorphic formations from the Vilcan and Retezat Mountains (South Carpathians) |
1976 |
| details |
Cambrian |
Tremadocian |
Italy |
Kalvacheva,R.K. et al. Acritarch evidence for the Cambrian age of Phyllites in the Agordo area (South-Alpine Basement of eastern Alps, Italy). |
1986 |
| details |
Late Cambrian |
|
Spain |
Fombella Blanco,M.A. Resemblances and differences between the palynological associations of Upper Cambrian age in the northwest of Spain, (Vozmediano), and North of Africa. |
1987 |
| details |
Tremadocian |
Arenigian |
Nd |
Steemans,P. Spores and crytospores diversification from the Ordovician to the Lower Devonian. |
1998 |
| details |
Middle Arenigian |
|
Czechoslovakia(Bohemia) |
Fatka,O. et al. Morphologic variability in two populations of Arbusculidium filamentosum (Vavrdova 1965), Vavrdova,1972. |
1999 |
| details |
Middle Arenigian |
|
Czechoslovakia(Bohemia) |
Fatka,O. et al. Morphologic variability in two populations of Arbusculidium filamentosum (Vavrdova 1965), Vavrdova,1972. |
1999 |
| details |
Late Arenigian |
Early Llanvirnian |
Czech Republic |
Fatka,O. Organic-walled microfossils (Chitinozoa and Acritarcha) from Praha - Cervenн vrch Hill (SЎrka Formation, Middle Ordovician, Prague Basin) |
2003 |