| original |
Late Maastrichtian |
|
Nigeria |
Jan du ChЄne,R.E. Some new pollen species of the Upper Maastrichtian, Tar Sand, Abeokuta Formation, Southern Nigeria. |
1977 |
| details |
Late Maastrichtian |
|
Nigeria |
Jan du ChЄne,R.E. Palynological study of the Tar Sand, Upper Maestrichtian of the southwest Nigeria. |
1979 |
| details |
Late Maestrichtian |
|
Niger |
Dikouma,M. et al. Biostratigraphy of some Maestrichtian and Paleocene Formations in the Iullemmeden (Southern Niger) |
1994 |
| details |
Campanian |
|
Ivory Coast |
Tea-Yassia,J. et al. Study of some Upper Cretaceous palynomorphs from the Cдte d'Ivoire offshore basin: biostratigraphical and pal¦oenvironmental implications. |
1999 |