| details |
Late Tertiary |
|
Nigeria |
Legoux,O. Some characteristic species of pollen from the Neogene of Nigeria. |
1978 |
| details |
Eocene |
|
Colombia |
Thery,J.-M. et al. Discovery of Arenigian acritarchs from Araracuara, (Caqueta-Colombia). Reinterpretation of the Saliente del Vaupes Area. |
1986 |
| details |
Late Eocene |
Oligocene |
Sudan |
Kaska,H.V. A spore and pollen zonation of Early Cretaceous to Tertiary nonmarine sediments of central Sudan. |
1989 |
| details |
Middle Eocene |
Late Eocene |
Benin |
Oyede,M. et al. Dating of the so called "Oligocene" Unconformity in the onshore part of the coastal sedimentary Basin of Benin (West Africa). |
1992 |
| details |
Late Eocene |
Oligocene |
Sudan |
Christopher,R.A. et al. Introduction to biostratigraphy and time scales. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |