| original |
Late Proterozoic |
|
USSR(WSL) |
Timofeev,B.V. Spheromorphids of the Proterozoic |
1969 |
| details |
Early Riphean |
|
USSR(Siberia) |
Ivanovskaya,A.V. et al. Dependence between the salinity and phytoplankton distribution, (exemplified by the Riphean of the Turukhan Area). |
1971 |
| details |
Riphean |
|
USSR(Siberia) |
Timofeev,B.V. et al. Microfossils of the Precambrian, Cambrian and Ordovician. |
1976 |
| details |
Late Riphean |
Early Cambrian |
USSR(Altai Kray) |
Pjatiletov,V.G. Microfossils of the Mansk Trough. (In: Geological constitution of the Mansk Trough and its position in the Sayan-Altai "Baikalides") |
1978 |
| details |
Riphean |
|
USSR(Siberia) |
Ivanovskaya,A.V. et al. Distributions of phytoplankton of the Middle Riphean sediments formation. (In: Paleontology of the Precambrian and Early Cambrian.) |
1979 |
| details |
Riphean |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |