| details |
Oligocene |
Miocene |
China(Tsinghai) |
Jiang,D.-X. Palynological evidence for identification of nonmarine petroleum source rocks, China. (In: Palynology of Ore Deposits. E.I. Robbins, editor) |
1990 |
| details |
Late Eocene |
|
India(Assam) |
Chakraborty,A. et al. Stratigraphy of the Cretaceous - Tertiary sedimentary sequence, southwest of Shillong Plateau. |
1972 |
| details |
Late Tertiary |
|
China(Tsinghai) |
Jiang,D.-X. Spores and pollen in oils as indicators of lacustrine source rocks. (In: Lacustrine Petroleum source rocks. A.J.Fleet et al, editors) |
1988 |
| original |
Late Eocene |
|
India(Assam) |
Baksi,S.K. Palynological investigation of Simsang River Tertiaries, South Shillong Front, Assam. |
1962 |