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Author - title
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Year
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| details | Late Permian | USSR(Tyumenskaya Oblast) | Dibner,A.F. Stratigraphic significance of spore and pollen assemblages of Imangda Coal deposits in the Norilsk Region. | 1961 | |
| details | Early Artinskian | USSR(Urals) | Chuvashov,B.I. et al. The Upper Paleozoic in the Region of Biserti Settlement. (In: Upper Paleozoic Terrigenous Deposits of the Urals.) | 1970 |