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Author - title
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Year
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| details | Devonian | Carboniferous | USSR(Ukrainian SSR) | Ryabenko,V.A. et al. Microphytofossils from the rocks of the Belopotokian and Delovetsian Suites in the North western part of the Marmaroshian Massif | 1986 |
| details | Middle Visean | Namurian B | USSR(Ukrainian SSR) | Teteryuk,V.K. Stratigraphic separation of Lower Carboniferous deposits of the western part of the Donbas by spores and pollen | 1960 |