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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 | 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 | |
| details | Devonian | USSR(Ukrainian SSR) | Medvedeva,A.M. Palynological investigation of Petroleum | 1978 |