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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 Jurassic | USSR(Kazakh SSR) | Leonenok,N.I. Lower Mesozoic Coal-bearing deposits in the area of the Middle Course of the River Ilek. (In: History of Lower Mesozoic Coal Accumulation in Kazakhstan: Part 2.) | 1961 | |
| details | Jurassic | USSR(Ukrainian SSR) | Semenova,E.V. Stratigraphy of the Upper Triassic Boundary in the North-West Part of the Don Basin. | 1979 |