| original |
Early Cambrian |
|
USSR(Siberia) |
Pykhova,N.G. Microfossils in the Lower Cambrian and Pre-Cambrian of the South of eastern Siberia. (In: The Importance of Palynological Analysis for the Stratigraphic and Paleofloristic Investigations. M.I. Nejshtadt, editor. Papers for the Second International Palynology Conference., Utrecht,1966) |
1966 |
| details |
Riphean |
|
USSR(Kazakh SSR) |
Yefimov,I.A. et al. Regional metamorphism, age and formation conditions of certain Abyssal Precambrian rocks in Mugodzhary. |
1970 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |