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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 | Middle Visean | Late Visean | Canada(Arctic) | Utting,J. et al. Palynology of the Lower Carboniferous Emma Fiord Formation of Devon, Axel Heiberg and Ellesmere Islands, Canadian Arctic Archipelago. (In: Contributions to Canadian Paleontology.) | 1989 |
| details | Tournaisian | Visean | Spitsbergen | Richardson,J.B. Report of Subgroup 13B on Devonian and Lower Carboniferous. | 1962 |