| details |
Late Precambrian |
Devonian |
Nd |
Loeblich,A.R.,Jr. et al. Some new and revised organic-walled phytoplankton microfossil genera. |
1976 |
| details |
Sinian |
|
China(SW.China) |
Yin,L. et al. Pre-Cambrian microfloras of Southwest China, with reference to their stratigraphical significance. |
1978 |
| details |
Proterozoic |
Middle Ordovician |
USSR(Pre-Baltic) |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Sinian |
|
China |
Cao,J. et al. The Sinian System in Southwest China. (In: Paleontology and stratigraphy of Carbonate rocks in the Southwestern Region of China) |
1979 |
| details |
Early Cambrian |
|
USSR(Siberia) |
Meyerhoff,A.A. Geology and petroleum fields in Proterozoic and Lower Cambrian Strata, Lena-Tunguska Petroleum Province, Eastern Siberia, USSR. (In: Giant Oil and Gas Fields of the Decade 1968-1978. M.T. Halbouty, editor) |
1980 |
| details |
Algonkian |
|
Nd |
Kedves,M. Introduction to the palynology of Pre-Quaternary deposits |
1986 |
| details |
Proterozoic |
Middle Ordovician |
USSR(Pre-Baltic) |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |