| original |
Early Permian |
|
|
Bharadwaj,D.C. et al. Palynostratigraphy of Lower Gondwana deposits in Parana and Maranhao Basins, Brazil. |
1976 |
| original |
Early Permian |
|
Brazil(Maranhao) |
Bharadwaj,D.C. et al. Palynostratigraphy of Lower Gondwana deposits in Parana and Maranhao Basins, Brazil. |
1976 |
| details |
Kazanian |
Tatarian |
India(West Bengal) |
Tiwari,R.S. et al. Palyno-dating of Permian and Triassic sediments in two bore-holes from the eastern Limits of Raniganj Coalfield, West Bengal. |
1979 |
| details |
Late Permian |
|
India(West Bengal) |
Rana,V. et al. Palynological succession in Permian-Triassic sediments in Bore-Hole Rnm-3, East Raniganj Coalfield, West Bengal. |
1980 |
| details |
Permian |
|
India |
Raghubanshi,A.S. et al. Environmental change and biological diversity: present, past and future. |
1991 |