| details |
Middle Eocene |
|
Colorado |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Utah |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Colorado |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Miocene |
|
Hungary |
Kedves,M. Palynological investigation of the Miocene Brown Coal of the Here No.13 borehole |
1959 |
| details |
Tertiary |
|
India(Madhya Pradesh) |
Paradkar,S.A. et al. Addition to the microflora of Deccan Inter-Trappean Beds of Mohgaon-Kala. |
1980 |