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Author - title
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| details | Late Givetian | Spitsbergen | Allen,K.C. Lower and Middle Devonian spores of North and Central Vestspitsbergen | 1965 | |
| details | Givetian | Spitsbergen | Allen,K.C. Spore assemblages and their stratigraphical application in the Lower and Middle Devonian of North and Central Vestspitbergen | 1967 |