| details |
Late Proterozoic |
|
USSR(WSL) |
Timofeev,B.V. Spheromorphids of the Proterozoic |
1969 |
| details |
Riphean |
|
USSR(Komi ASSR) |
Timofeev,B.V. The age of metamorphic species of the Timanskiy Kryash and of ancient Suites of South-West Pritimanya. (In:Mikrofitofossilii Proterozoya i Rannego Paleozoya SSSR. B.V.Timofeev, editor) |
1974 |
| details |
Middle Cambrian |
Tremadocian |
USSR(Kazakh SSR) |
Borovikov,L.I. et al. Microfossils from Upper Precambrian and Lower Cambrian deposits of Southern Kazakhstan, (In: Precambrian and Early Cambrian paleontology-Theses of reports to the All-Union paleontological Symposium) |
1976 |
| details |
Riphean |
|
USSR(Siberia) |
Timofeev,B.V. et al. Microfossils of the Precambrian, Cambrian and Ordovician. |
1976 |
| 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 |