| details |
Middle Algonkian |
Late Algonkian |
India(Uttar Pradesh) |
Nautiyal,A.C. Algonkian (Upper to Middle) micro-organisms from the Semri Group of Son Valley (Mirzapur Distt.) India |
1983 |
| details |
Middle Algonkian |
Late Algonkian |
India |
Nautiyal,A.C. Morphological study of Algonkian Cyanophytes from Lesser Himalaya and Plains Region with stratigraph Ic significance |
1984 |
| details |
Late Riphean |
|
USSR(Evenki Nat.Okrug) |
Sergeeva,V.N. Microfossils in Upper Riphean silicified columnar stromatolites from the Turukhansk area |
1984 |
| details |
Late Riphean |
|
USSR(Evenki Nat.Okrug) |
Sergeeva,V.N. Microfossils in Upper Riphean silicified columnar stromatolites from the Turukhansk area |
1984 |
| details |
Middle Algonkian |
|
India(Himachal Pradesh) |
Nautiyal,A.C. First record of Middle Algonkian micro-organisms from Naldera Limestone (Basantpur Formation) of Himachal Himalaya with biostratigraphy. |
1985 |
| details |
Late Algonkian |
|
India(Uttar Pradesh) |
Nautiyal,A.C. Biostratigraphic significance of Late Algonkian micro-organisms, (Zone Iv) in Upper Tejam and Semri Groups of Lesser Himalaya, sub-surface Ganga Valley and Plains Region, Northern India. |
1988 |
| details |
Vendian |
|
USSR(Siberia) |
Veis,A.F. Riphean and Vendian microfossils of the Ushur-Maya and Turukhan Regions of Siberia |
1988 |
| details |
Early Riphean |
Middle Riphean |
India(Jammu & Kashmir) |
Venkatachala,B.S. et al. Cyanobacterial mats from the Neoproterozoic Vaishnodevi Limesto Jammu and Kashmir |
1997 |
| details |
Late Proterozoic |
|
Australia(W.Australia) |
Buick,R. et al. Acritarchs and microfossils from the Mesoproterozoic Bangemall Group, Northwestern Australia |
1999 |