| details |
Precambriam |
|
Africa |
Bozhko,N.A. et al. Upper Precambrian biostratigraphy of Africa. |
1975 |
| details |
Riphean |
|
USSR(Russian Platform) |
Timofeev,B.V. Spheromorphids of the Proterozoic |
1969 |
| details |
Riphean |
|
USSR(Urals) |
Timofeev,B.V. Spheromorphids of the Proterozoic |
1969 |
| details |
Riphean |
|
USSR(WSL) |
Timofeev,B.V. Spheromorphids of the Proterozoic |
1969 |
| details |
Proterozoic |
|
USSR(Irkutskaya Oblast) |
Timofeev,B.V. Spheromorphids of the Proterozoic |
1969 |
| details |
Vendian |
|
USSR(Russian Platform) |
Shepeleva,E.D. Stratigraphic Division of Vendian deposits in the Central Russian Platform, according to acritarch finds. (In: Microfossils USSR. T.F.Vozzhennikova et al, editors) |
1974 |