| details |
Ordovician |
Silurian |
USSR(Russian Platform) |
Umnova,N.I. Ordovician and Silurian acritarchs of the Moscow Basin and Prebaltic |
1975 |
| details |
Precambriam |
Cambrian |
USSR(Siberia) |
Timofeev,B.V. Discovery of Cambrian and Precambrian spores in formations of eastern Siberia. |
1955 |
| details |
Precambriam |
Cambrian |
Nd |
Roselt,G. Palaobotanic and palaobotanical method and geological investigation. |
1972 |
| details |
Sinian |
|
USSR(Russian Platform) |
Lutkevich,E.M. et al. Sinian or Riphean Group. (In: Stratigraphy and Paleogeography of the Sinian, Paleozoic and Triassic of the Western Russian Platform. E.M.Lutkevich and A.K.Krilova, editor) |
1973 |
| details |
Riphean |
|
USSR(Russian Platform) |
Sucharevitsch,P.M. On the stratigraphic Layers of Arkosic Sandstone in the Southwest of the Russian Platform |
1955 |
| details |
Devonian |
|
USSR(Bashkir ASSR) |
Chibrikova,E.V. Spores found in the Bavlin deposits of Bashkiria |
1954 |
| details |
Early Cambrian |
|
USSR(Moldavian SSR) |
Timofeev,B.V. Lower Palaeozoic sediments in Moldavia |
1952 |
| details |
Devonian |
|
USSR(Urals) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Devonian |
|
USSR(Ukrainian SSR) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Permian |
|
USSR(Urals) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Devonian |
|
USSR(Krasnoyarsk Kray) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Permian |
|
USSR(Kazakh SSR) |
Chepikov,K.R. et al. Spores and pollen from oils of the Volga-Ural Region and their significance in solving the problem of oil migration. |
1960 |
| details |
Early Cambrian |
|
USSR(Urals) |
Naumova,S.N. Spores of ancient Formations of the Slopes of the Southern Urals. |
1951 |
| original |
Early Cambrian |
|
USSR |
Naumova,S.N. Spores of the Lower Cambrian |
1949 |
| details |
Nd |
|
Nd |
German,T.N. et al. Systematic descriptions of microfossils. (In: Precambrian Microfossils of the USSR. T.V.Yankauskas, editor) |
1989 |
| details |
Early Cambrian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Early Cambrian |
|
Romania |
Oniceanu,M. et al. New data on the age of certain Crystaline Formations of the anticline zone of Bretila (Bistrita Mountains). |
1974 |