| details |
Early Cambrian |
|
USSR(Russian Platform) |
Kopeliovich,A.V. Some questions of stratigraphy of the Lower Cambrian of the Central Regions of the Russian Platform |
1951 |
| details |
Riphean |
|
USSR(Russian Platform) |
Sucharevitsch,P.M. On the stratigraphic Layers of Arkosic Sandstone in the Southwest of the Russian Platform |
1955 |
| details |
Early Cambrian |
|
Czechoslovakia |
Obrhel,J. On the occurrance of spores and pollen (sporae dispersae) in Lower Paleozoic and Pre-Paleozoic formations |
1958 |
| 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 |