Pseudovalvisisporites perversus
- Citations total:
- 2
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| details | Visean | Niger | Lachkar,G. The Visean age of the Agade Coal Basin, (Niger). II. | 1978 | |
| details | Carboniferous | Permian | Gondwanaland | Pi©rart,P. Some remarks concerning the megaspores of Gondwana. | 1978 |