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Author - title
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Year
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| details | Barremian | Aptian | USSR(Nenets Nat.Okrug) | Gryazeva,A.S. Palynological basis for the stratigraphy of Lower Cretaceous deposits of the Pechorsk Basin. (In: Mikrofitofossilii v neftyanoi geologii. N. A. Timoshina, editor) | 1980 |
| details | Ufimian | USSR(Kazakh SSR) | Kukhtinov,D.A. et al. The Ufimian Stage of the South-East Russian Platform. (In: The Phanerozoic of the Northern European Part of the USSR.) | 1980 | |
| details | Nd | Nd | Hart,G.F. The systematics and distribution of Permian miospores. | 1965 |