| original |
Middle Precambrian |
|
Canada(Ontario) |
Barghoorn,E.S. et al. Microorganisms from the Gunflint Chert. |
1965 |
| details |
Early Proterozoic |
|
Nd |
Korde,K.B. The geological history of the Earliest algae and their stratigraphical assemblages. |
1969 |
| details |
Early Proterozoic |
|
Canada(Ontario) |
Awramik,S.M. et al. Comparative biogeology of the Gunflint Formation from Canada and Frere Formation (Western Australia). |
1978 |
| details |
Early Proterozoic |
|
Australia(W.Australia) |
Awramik,S.M. et al. Comparative biogeology of the Gunflint Formation from Canada and Frere Formation (Western Australia). |
1978 |
| details |
Middle Precambrian |
|
Canada(Ontario) |
Mandal,J. et al. Microbiota from the Kushalgarh Formation, Delhi Supergroup, India. |
1984 |
| details |
Vendian |
|
India(Jammu & Kashmir) |
Kumar,G. et al. The Precambrian-Cambrian boundary problem and its prospects, northwest Himalaya, India. |
1984 |
| details |
Precambriam |
|
India |
Maithy,P.K. Indian Precambrian biota. (In: Proceedings, Symposium and Technical Sessions. R.S. Tiwari, editors) |
1984 |
| details |
Late Riphean |
|
India(Jammu & Kashmir) |
Kumar,G. The Precambrian-Cambrian boundary Beds, northwest Himalaya, India, and boundary problem. (In: Proceedings, Symposium and Technical Sessions. R.S. Tiwari, editors) |
1984 |
| details |
Riphean |
|
India(Uttar Pradesh) |
Tewari,V.C. Discovery of Pre-Edicaran acritarch Chuaria Circularis (Walcott 1899; Vidal and Ford,1985) from the Deoban Mountains, Lesser Himalaya, India |
1996 |