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Geolocation
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Author - title
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Year
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| details | Early Permian | USSR(Urals) | Abramova,S.A. et al. Palynological investigations of Upper Kama's potassium deposits, underlying Kungurian Salt Layers. | 1960 | |
| details | Triassic | USSR(WSL) | Bogatikova,V.K. et al. On the stratigraphic scheme of Meso-Cenozoic deposits of the western part of the West Siberian Plain. | 1957 | |
| details | Early Jurassic | USSR(Kazakh SSR) | Barbashinova,V.N. Spore and pollen complexes of Mesozoic Layers of the northern part of the Turgayskaya Basin | 1956 |