| details |
Early Permian |
|
USSR(Turkmen SSR) |
Chepikov,K.R. et al. Spores and pollen in oil, gas, condensates and oil-field waters. (In: Sporen and Pollen in Oils and Deposits of Oil and Gas-Bearing Regions of the USSR.) |
1971 |
| details |
Silurian |
Early Devonian |
USSR(Vologda) |
Batanova,G.P. et al. Age of Pre-Middle Devonian sediments of the Volgograd District. |
1972 |
| details |
Devonian |
|
USSR(Pre-Urals) |
Tchepikov,K. et al. Spore-pollen analysis of oil and Gas. |
1973 |
| details |
Nd |
|
Nd |
Rudavskaya,V.A. Systematic principles of sphaeromorphs. (In:Mikrofitofossilii Proterozoya i Rannego Paleozoya SSSR. B.V.Timofeev, editor) |
1974 |
| details |
Proterozoic |
|
USSR(Ukrainian SSR) |
Shkrebta,G.P. Causes of variability of microplant assemblages in petroleum, gases, formation water and host rocks. |
1975 |
| details |
Permian |
|
USSR(Stalingrad) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Ordovician |
Silurian |
USSR(Vologda) |
Nazarenko,A.M. et al. Stratigraphic subdivision of Pre-Upper Eifelian deposits of the Volga Region near Volgograd based on palynologic data |
1984 |
| details |
Ordovician |
Silurian |
USSR(Vologda) |
Nazarenko,A.M. et al. Stratigraphic subdivision of Pre-Upper Eifelian deposits of the Volga Region near Volgograd based on palynologic data |
1984 |
| details |
Precambriam |
|
USSR |
Yankauskas,T.V. et al. Status of the study. (In: Precambrian Microfossils of the USSR. T.V.Yankauskas, editor) |
1989 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |