| details |
Middle Cambrian |
Late Cambrian |
Romania |
Iliescu,V. et al. New palynological proofs of the Cambrian age of the Tulghes Group, (East Carpathians). |
1983 |
| details |
Early Proterozoic |
|
USSR(Buryat ASSR) |
Sokolov,Y.M. et al. Geological age of metamorphic and ore formations of the Baikal-Patoma folded region (Pb-Pb Thermoisochronous, micropaleophytological methods). |
1985 |
| details |
Middle Proterozoic |
Cambrian |
Romania |
Dimitrescu,R. Early Caledonian event in the Pre-Alpine metamorphic sequences the Romanian Carpathians |
1985 |
| details |
Ediacaran |
|
China(Hupei) |
Yin,L. Microfossils of the Doushantuo Formation in the Yangtze Gorge District, Western Hubei. |
1985 |
| details |
Vendian |
|
Spitsbergen |
Mikhailova,N.S. et al. Microfossils of the Late Precambrian of Spitsbergen and their stratigraphic significance |
1986 |
| details |
Late Riphean |
Vendian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |