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Geolocation
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Author - title
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Year
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| details | Permian | France(Loire) | Boulouard,C. Contribution to the study of the "Saccates": Essay of morphographic classification and stratigraphic application. | 1963 | |
| details | Early Permian | South Dakota | Kremp,G.O.W. Report on referred fossils.I. | 1960 | |
| details | Stephanian | Early Permian | France(Nievre) | Alpern,B. et al. Description of some microspores of the French Permo-Carboniferous. | 1958 |