| details |
Early Cambrian |
|
USSR(Siberia) |
Pyatiletov,V.G. et al. Acritarchs of the Yudomskogo Complex. (In: The Vendian System. Historic Geological and Paleontological Basis. Paleontology. B.S.Sokolov, editor) |
1985 |
| details |
Late Vendian |
Cambrian |
USSR(Russian Platform) |
Sokolov,B.S. The Vendian system; historical geological and paleontological substantiation. (In: The Vendian System. B.S.Sokolov, editor) |
1985 |
| details |
Nd |
|
USSR(Siberia) |
German,T.N. et al. Systematic descriptions of microfossils. (In: Precambrian Microfossils of the USSR. T.V.Yankauskas, editor) |
1989 |