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FLORA OF THE LOWER CRETACEOUS DEPOSITS OF THE YAMAL PENINSULA (WEST SIBERIA)

A. I. Muravyev

National Research Tomsk State University, Tomsk, Russia

The article describes the new findings of fossil plants from the core of wells in the northern Yamal Peninsula. Among the remains there are both Jurassic and Early Cretaceous taxa, with the predominance of the latter. The basis of the studied complex consists of ferns of the Coniopteris Brongniart and Scleropteris Saporta genera, as well as coniferous Pityophyllum Nathorst, Cephalotaxopsis Fontaine and bennetite Pterophyllum Brongniart. Some taxa are first found in the area under study, which indicates that the northern regions of West Siberia are scantily known. Morphological and epidermal cuticular methods are used in describing the plants. A similarity of some species to plants from the Lower Cretaceous deposits of the eastern regions (the Lena and Kolyma basins, the Far East, Transbaikal) is revealed.

Keywords: Cretaceous deposits, Poluy-Yamal-Gydan structure-facies zone, vegetable remains, Formation, flora.

DOI 10.20403/2078-0575-2019-3-25-37