| original |
Late Riphean |
|
USSR(WSL) |
German,T.N. Findings of massive accumulations of Trichomorphs in the Riphean. (In:Mikrofitofossilii Proterozoya i Rannego Paleozoya SSSR. B.V.Timofeev, editor) |
1974 |
| details |
Late Riphean |
|
USSR(Pre-Baltic) |
Timofeev,B.V. et al. Microfossils of the Precambrian, Cambrian and Ordovician. |
1976 |
| details |
Riphean |
|
USSR(Nenets Nat.Okrug) |
Kovaleva,G.N. et al. Stratigraphic and tectonic position of the most ancient deposits on the South Island of Nova Zembya. |
1984 |
| details |
Late Sinian |
|
China |
Xing,Y. The Sinian and its position in Geological Time Scale. |
1984 |