| original |
Middle Cambrian |
|
USSR(Pre-Baltic) |
Timofeev,B.V. Ancient flora of the Prebaltic Region and its stratigraphic significance |
1959 |
| original |
Cambrian |
|
England(Staffordshire) |
Davies,H.G. et al. Age of the Newgale Beds. |
1964 |
| details |
Late Cambrian |
|
S.Ireland(Tipperary) |
Colthurst,J.R.J. et al. Palaeontological evidence for the age of the Lower Palaeozoic rocks of the Slievenamon Inlier, County Tipperary. |
1977 |
| details |
Middle Cambrian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Cambrian |
|
Belgium |
Vanguestaine,M. The Late Cambrian age of the Upper RN2B from the Stavelot area. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| details |
Tremadocian |
Early Arenigian |
S.Ireland |
Gardiner,P.R.R. et al. Cambrian and Ordovician microfossils from south-east Ireland and their implications. |
1971 |
| details |
Tremadocian |
Early Arenigian |
S.Ireland |
Gardiner,P.R.R. et al. Cambrian and Ordovician microfossils from south-east Ireland and their implications. |
1971 |
| details |
Acadian |
|
Czechoslovakia |
VavrdovЎ,M. Excystment mechanism of Early Paleozoic acritarchs. |
1976 |
| details |
Tremadocian |
|
USSR(Russian Platform) |
Andreeva,E.M. Guide complexes of plant microfossils of the Upper Proterozoic and lower deposits of the Russian Platform. (In: Palynology, Method and Stratigraphy) |
1973 |
| details |
Tremadocian |
Arenigian |
Romania |
Beju,D. Zoning and correlation of the Paleozoic of the Moesian Platform on the basis of palynoprotistological assemblages.1. |
1972 |
| details |
Llanvirnian |
|
England(Lancashire) |
Downie,C. et al. Age of the Eycott Volcanic Group and its Conformable relationship to the Skiddaw Slates in the English Lake District. |
1972 |
| details |
Middle Cambrian |
|
USSR(Russian Platform) |
Rudavskaya,V.A. Palaeozoic Hystrichospheres. |
1969 |
| details |
Cambrian |
|
England(Staffordshire) |
Davies,H.G. et al. Age of the Newgale Beds. |
1964 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Middle Cambrian |
Early Tremadocian |
Poland |
Kowalczewski,Z. et al. New data on Cambrian and Lower Ordovician rocks in the vicinity of Wisniowka in the Gory Swieto Krzyskie Mountains. |
1986 |
| details |
Tremadocian |
|
USSR(Russian Platform) |
Umnova,N.I. Ordovician and Silurian acritarchs of the Moscow Basin and Prebaltic |
1975 |
| details |
Late Cambrian |
Ordovician |
Romania |
Paraschiv,D. et al. The present Stage of Pre-Jurassic deposits knowledge in South Dobrogea |
1983 |