| details |
Cambrian |
|
USSR(Yakut ASSR) |
Popova,Z.P. et al. Organic remains in Petroleum of the Markovo Field |
1965 |
| details |
Vendian |
|
Poland |
Jagielska,L. Microflora in the Eocambrian and Lower Cambrian deposits in the eastern area of Poland |
1966 |
| original |
Bashkirian |
|
USSR(Yaroslav) |
Medvedeva,A.M. et al. Study of acritarchae from oils and rocks of the Volga-Ural Regions by replica method. (In: Sporen and Pollen in Oils and Deposits of Oil and Gas-Bearing Regions of the USSR.) |
1971 |
| details |
Vendian |
|
Poland |
Jagielska,L. Flora of the Vendian; Microflora |
1972 |
| details |
Late Riphean |
|
USSR(Siberia) |
Meyerhoff,A.A. Geology and petroleum fields in Proterozoic and Lower Cambrian Strata, Lena-Tunguska Petroleum Province, Eastern Siberia, USSR. (In: Giant Oil and Gas Fields of the Decade 1968-1978. M.T. Halbouty, editor) |
1980 |