Systematic composition of the middle Jurassic flora and its stratigraphic distribution (Ustyurt region, Uzbekistan)
Gafur Ganievich JalilovIsomiddin TogaevNational University of Uzbekistan named after Mirzo Ulugbek 4, University str., 100174 Tashkent, UzbekistanMa’rufjon AlimovNational University of Uzbekistan named after Mirzo Ulugbek 4, University str., 100174 Tashkent, UzbekistanFarrukh BabajanovTashkent Institute of Irrigation and Agricultural Mechanization Engineers, National Research University, 39 Kari Niyazov ko'chasi, 100000 Tashkent, UzbekistanZaytuna IbragimovaTashkent Institute of Irrigation and Agricultural Mechanization Engineers, National Research University, 39 Kari Niyazov ko'chasi, 100000 Tashkent, UzbekistanSarvar MelikuziyevTashkent Institute of Irrigation and Agricultural Mechanization Engineers, National Research University, 39 Kari Niyazov ko'chasi, 100000 Tashkent, Uzbekistan
ABI
Abstract
The article presents the systematic composition and stratigraphic distribution of the Middle Jurassic flora of Ustyurt (Uzbekistan). In the Middle Jurassic sediments, three plant complexes of different ages are distinguished, corre-sponding to aalen, bayos and bath, differing from each other by the unequal species composition of Coniopteris ferns and Nilssonia cicadas. The change of complexes during the Middle Jurassic occurred gradually. The vegetation reached its greatest dawn in the Bajocian and Bata centuries.
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