| original |
Late Permian |
|
India(West Bengal) |
Salujha,S.K. Miospores assemblage of Seam IX of East Raniganj, (India). |
1965 |
| details |
Tatarian |
|
India |
Tiwari,R.S. Palaeozoic disaccate pollen. (In: Aspects and Appraisal of Indian Palaeobotany. K.R.Surange, editor) |
1974 |
| details |
Late Permian |
|
India(West Bengal) |
Lakhanpal,R.N. et al. A catalogue of Indian fossil plants |
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 |
Early Triassic |
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 |