| details |
Middle Proterozoic |
|
USSR(Siberia) |
Ilchenko,L.I. Late Precambrian acritarchs of North Siberia and their stratigraphic significance. |
1973 |
| details |
Early Riphean |
Middle Riphean |
USSR(Nenets Nat.Okrug) |
Smirnova,L.N. Acritarchs in Late Precambrian and Cambrian deposits of Taimyr and their significance for correlation of the enclosing strata. (In: The Precambrian and Cambrian of the Taimyr Peninsula. A Collection of Six Scientific Papers. V.Y.Kabankov, editor) |
1981 |
| details |
Late Riphean |
|
USSR(Urals) |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |