Stratigraphy and lithology
Section editor – PhD in geology and mineralogy Kirichkova A.I.
Article # 10_2014 submitted on 11/06/2013 displayed on website on 03/13/2014
22 p.
pdf  Cycads (SYCADALES, DORATOPHYLLUM HARRIS genus, 1932) of gray-colored strata of continental triassic, Timan-Pechora basin
Article is devoted to the first results of the analysis and study of plants macroremains collected at the end of the last century by geologists and paleobotanists of VNIGRI from Triassic deposits of the Timan-Pechora province. This was possible by the need to substantiate the age of gray-colored Triassic strata and its stratigraphic units. The systematic composition of cycads group and stratigraphic confinement of taxa were clarified. The diagnosis of the Doratophyllum genus was supplemented with epidermal signs. The typification of previously allocated three Pechora species - D. acuminata Chramova, D. synensis Chramova, D. vjatkensis Chramova was given; their diagnoses and stratigraphic confinement were clarified. For the first time for the flora of variegated strata of the region (Naryanmarskaya, Syninskaya suites) the megasporophylls of cycads of the Dioonitocarpidium genus was described, commonly known as part of Middle Triassic (Ladinian) floras of Europe.

Key words: Timan-Pechora basin, Middle Triassic, Ladinian, flora, Сycads, plant macroremains, epidermis, megasporophylls.
article citation Kirichkova A.I., Esenina A.V. Tsikadovye (por. SYCADALES, rod DORATOPHYLLUM HARRIS, 1932) serotsvetnoy tolshchi kontinental'nogo triasa Timano-Pechorskogo basseyna [Cycads (SYCADALES, DORATOPHYLLUM HARRIS genus, 1932) of gray-colored strata of continental triassic, Timan-Pechora basin]. Neftegazovaya Geologiya. Teoriya I Praktika, 2014, vol. 9, no. 1, available at: http://www.ngtp.ru/rub/2/10_2014.pdf
DOI https://doi.org/10.17353/2070-5379/10_2014
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