| details |
Riphean |
|
USSR(Kazakh SSR) |
Yefimov,I.A. et al. Regional metamorphism, age and formation conditions of certain Abyssal Precambrian rocks in Mugodzhary. |
1970 |
| original |
Middle Riphean |
|
USSR(Kirghiz SSR) |
Lopukhin,A.S. Riphean acritarchs in Mugodzhary |
1974 |
| details |
Vendian |
Early Cambrian |
USSR(Kazakh SSR) |
Blyakhova,S.M. et al. First findings of acritarchs in deep-metamorphic ancient deposits of Kendyktasa, (Southern Kazakhstan). |
1976 |
| details |
Middle Riphean |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |