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From
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To
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Geolocation
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Author - title
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Year
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| details | Tournaisian | Visean | Spitsbergen | Richardson,J.B. Report of Subgroup 13B on Devonian and Lower Carboniferous. | 1962 |
| details | Visean | Early Namurian A | Spitsbergen | Hughes,N.F. et al. Palynological reconnaissance of the Lower Carboniferous of Spitsbergen. | 1961 |