| details |
Late Riphean |
|
USSR(Khabarovsk Kray) |
German,T.N. et al. Systematic descriptions of microfossils. (In: Precambrian Microfossils of the USSR. T.V.Yankauskas, editor) |
1989 |
| details |
Late Riphean |
|
USSR(Siberia) |
Vidal,G. et al. Patterns of phytoplankton radiation across the Precambrian-Cambrian boundary. |
1992 |
| details |
Nd |
|
Nd |
Butterfield,N.J. et al. Paleobiology of the Neoproterozoic Svabergfjellet Formation, Spitsbergen |
1994 |
| details |
Late Riphean |
|
Russia(Siberia) |
Vidal,G. Early ecosystems: Limitations imposed by the fossil record. |
1994 |