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Author - title
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Year
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| details | Late Ordovician | Early Eifelian | France(Loire Atlantique) | Moreau-Benoit,A. Stratigraphic palynology of the Silurian and Devonian in the southeast part of the Breton Massif, (Saint-Julien-de-Vouantes and Ancenis Synclinoria). | 1972 |
| details | Late Wenlockian | Early Gedinnian | Spain | Truyols,J. et al. The Silurian rocks of the Cantabrian zone and their fauna. | 1974 |