| original |
Late Precambrian |
|
China(Inner Mongolia) |
Timofeev,B.V. Micropaleophytological research into ancient strata. |
1966 |
| details |
Early Paleozoic |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Silurian |
Gedinnian |
USSR(Altai Kray) |
Koksharov,V.A. et al. Biostratigraphy and correlation of sections of Devonian deposits from the Leninoyorsk Graben in Rudnyi Altai |
1981 |
| details |
Early Sinian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |