| details |
Visean |
|
Niger |
Lachkar,G. The Visean age of the Agade Coal Basin, (Niger). II. |
1978 |
| details |
Early Carboniferous |
|
Niger |
Lachkar,G. et al. Affinity of the coal-bearing formations of Agades, Niger. |
1979 |
| details |
Early Carboniferous |
|
Niger |
Lachkar,G. et al. Lageniculate megaspores from the Lower Carboniferous of Niger and the Shaba Lower Gondwana. |
1982 |
| details |
Early Carboniferous |
|
Chad |
Lachkar,G. et al. Lageniculate megaspores from the Lower Carboniferous of Niger and the Shaba Lower Gondwana. |
1982 |
| original |
Early Carboniferous |
|
Chad |
DybovЎ-Jachowiczowa,S. et al. Revision of Carboniferous megaspores with Gula (Part Three) |
1987 |
| details |
Early Carboniferous |
|
Chad |
Pierart,P. The megaspores of the Lower Carboniferous and Lower Gondwana in Africa and South America. |
1989 |
| details |
Visean |
|
Niger |
Scott,A.C. et al. Paleozoic spores and pollen. Chapter 18G Palaeozoic megaspores. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |