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JURASSIC FLORA OF THE SAMARA VOLGA REGION
Authors: Gordenko Natalia Vladislavovna, Morov Vladimir Pavlovich, Varenov Dmitry Vladimirovich, Broushkin Anatoly Valerievich
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The Jurassic flora of the Samara Volga region is authentically known from two localities (Samarskaya Luka and Chapaevsk), which are dated to the Bajocian - Bathonian. Plant remains in these localities are fragmentary, their taxonomic diversity is low. The flora of Samarskaya Luka is represented by a few finds, which do not provide us with complete information on the Middle Jurassic vegetation of the given region. The flora of the Chapaevsk locality is more informative and allows reconstructing woody landscape with predominance of conifers (Pityocladus, Mirovia) and Ginkgoales. Finds of mineralized wood with well-defined annual rings in the Chapaevsk locality point to seasonality of climate in this region. In the flora of the Samara Volga region, genera, indicating a warm climate, are not detected, but it may be caused by the peculiarities of taphonomy of the localities considered. This flora apparently was growing in the vicinity of the upper boundary of the ecotone between the European-Sinian and Siberian palaeophloristic areas.