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Author - title
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Year
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| details | Middle Jurassic | USSR(Kazakh SSR) | Andreeva,E.M. et al. Palaeopalynology. (Three Volumes: Volume I: Methods. Volume II: Complexes of palynomorphs of the Precambrian-Holocene of the USSR. Volume III: Figures and Plates. Editor-I.M. Pokrovskaya) | 1966 | |
| details | Early Triassic | USSR(Kazakh SSR) | Medvedeva,A.M. et al. Direct evidence for vertical oil migration in the eastern Precaspian. | 1993 |