| original |
Early Carboniferous |
|
Chad |
Dijkstra,S.J. The megaspores of Boring Tchad. |
1971 |
| details |
Early Carboniferous |
|
Chad |
Dijkstra,S.J. The megaspores of Boring Tchad. |
1971 |
| details |
Carboniferous |
|
South Africa |
Pi©rart,P. Stratigraphical and geographical distribution of Gondwana megaspores. |
1980 |
| details |
Early Carboniferous |
|
Chad |
Pierart,P. The megaspores of the Lower Carboniferous and Lower Gondwana in Africa and South America. |
1989 |
| details |
Early Carboniferous |
|
Niger |
Pierart,P. The megaspores of the Lower Carboniferous and Lower Gondwana in Africa and South America. |
1989 |