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Author - title
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Year
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| details | Early Jurassic | USSR(Kazakh SSR) | Ritenberg,M.I. et al. Lower Mesozoic coal accumulation in the Territory of the Maikiubensk Basin. (In: History of Lower Mesozoic Coal Accumulation in Kazakhstan: Part 1.) | 1961 | |
| details | Rhaetian | USSR(Komi ASSR) | Varyukhina,L.M. Spores and pollen of Triassic deposites of the Southern Pechora Basin. | 1961 |