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Author - title
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| details | Valanginian | Barremian | USSR(WSL) | Mchedlishvili,N.D. Lower Cretaceous flora of the northwestern part of the Western Siberian Lowland. (In: Palynology in Petroleum Geology. N.M.Ivanova, editor) | 1971 |
| details | Volgian | Early Valanginian | USSR(Taymyr Nat.Okrug) | Pavlov,V.V. On the question of palynological substantiation of the border of Upper Jurassic and Lower Cretaceous marine deposits of the Kheta River Basin, (Khatqangsk Depression). | 1969 |