UDC 551.733.13:56.016(571.151) |
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A NEW DATA ON UPPER ORDOVICIAN CONODONTS FROM THE GURYANOVKA FORMATION, NORTHEAST OF GORNY ALTAI
D. A. Pecherichenko 1, O. T. Obut 1,2, N. V. Sennikov 1,2
1 A.A.Trofimuk Institute of Petroleum Geology and Geophysics of SB RAS, Novosibirsk, Russia; 2 Novosibirsk State University, Novosibirsk, Russia
The detailed study of the Guryanovka Formation key sections at the northeast of Gorny Altai (Biya and Bura sections) for the first time revealed the representative collection of conodonts. The conodont fauna is composed of 12 species belong to 9 genera: Belodina compressa (Branson and Mehl, 1933), Phragmodus undatus Branson and Mehl, 1933, Panderodus gracilis (Branson and Mehl, 1933), Panderodus acostatus (Branson, Branson, 1947), Tasmanognatus careyi Burret, 1979, Aphelognathus sp., Panderodus sp., Drepanoistodus sp., Drepantodus sp., Colaptoconus sp., Paltodus sp., Scandodus sp. For the first time, the precise position of the P. undatus conodont Zone was defined in Gorny Altai (continuous Biya Section, base of unit 3).
Keywords: Ordovician, conodonts, Gorny Altai.
DOI 10.20403/2078-0575-2021-4-3-11