| details |
Late Proterozoic |
|
USSR(Murmansk) |
Ragozina,A.L. Stratigraphy and microfossils of the Terskaya Suite and Hiperboreysk Formations of the Kolskiy Peninsula. |
1971 |
| original |
Vendian |
|
USSR(Urals) |
Chepikova,I.K. Acritarchae of Wendean deposits of Volga-Ural oil and Gas Region and their significance for stratigraphy. (In: Sporen and pollen in deposits of oils and Gas-bearing Regions of the USSR.) |
1971 |
| details |
Vendian |
|
USSR(Urals) |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |