| original |
Early Cambrian |
|
USSR(Krasnoyarsk Kray) |
Pyatiletov,V.G. Microfossils (acritarchs) from Precambrian and Lower Cambrian deposits of the Marsk Trough. (In: Stratigraphy and Paleontology of the Lower and Middle Cambrian of the USSR. I.T.Zhuravleva, editor) |
1976 |
| details |
Early Cambrian |
|
USSR(Altai Kray) |
Pjatiletov,V.G. Microfossils of the Mansk Trough. (In: Geological constitution of the Mansk Trough and its position in the Sayan-Altai "Baikalides") |
1978 |
| details |
Middle Cambrian |
|
USSR(Kazakh SSR) |
Grishina,T.S. et al. Middle Cambrian microphytofossils acritarchs, from the Chingiz Range. (In: Biostratigraphy and paleontology of the Lower and Middle Cambrian of northern Asia) |
1983 |