| original |
Late Eocene |
|
Nigeria |
Jan du ChЄne,R.E. et al. Some new Eocene pollen of the Ogwashi-Asaba Formation, southeastern Nigeria. |
1978 |
| details |
Late Eocene |
Oligocene |
Nigeria |
Rao,V.R. et al. A short survey of palaeobotanical studies, (Cretaceous and Tertiary ), in Nigeria |
1988 |
| details |
Eocene |
Early Oligocene |
Togo |
Salard-Cheboldaeff,M. Intertropical African palynostratigraphy from Cretaceous to Late Quaternary times |
1991 |
| details |
Eocene |
Early Oligocene |
Nigeria |
Salard-Cheboldaeff,M. Intertropical African palynostratigraphy from Cretaceous to Late Quaternary times |
1991 |
| details |
Eocene |
Early Oligocene |
Niger |
Salard-Cheboldaeff,M. Intertropical African palynostratigraphy from Cretaceous to Late Quaternary times |
1991 |
| details |
Eocene |
Early Oligocene |
Mali |
Salard-Cheboldaeff,M. Intertropical African palynostratigraphy from Cretaceous to Late Quaternary times |
1991 |