Triradiate spores
- Citations total:
- 3
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| details | Vraconian | Early Cenomanian | Libya | Uwins,P.J.R. et al. Early to Mid-Cretaceous palynology of northeast Libya. (In: The Subsurface Palynostratigraphy of Northeast Libya. Special Publication of the University of Garryounis, Libya. E.Arnauti et al, editors) | 1989 |
| details | Cambrian | Sweden | Darrah,W.C. Spores of Cambrian plants. | 1937 | |
| details | Silurian | Tertiary | Nd | Chaloner,W.G. The evolution of adaptive features in fossil exines. | 1976 |