Tetrad type 1
- Citations total:
- 2
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Author - title
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| original | Early Cenomanian | Middle Cenomanian | Canada(Alberta) | Singh,C. Cenomanian microfloras of the Peace River area Northwestern Alberta | 1983 |
| original | Wenlockian | Gedinnian | Libya | Tekbali,A.O. et al. Silurian spores, acritarchs and chitinozoans from the Bani Walid Borehole of the Ghadamis Basin, Northwest Libya. (In: The Geology of Libya. M.J.Salem et al, editors) | 1991 |