Conodonts and ostracodes from the late Tournaisian bathyal sequence of the Polar Urals

• Autorzy: Zhuravlev A. V. , Sobolev D. B.

Identyfikatory

DOI

10.2478/ctg-2018-0003

• Języki publikacji: EN

Abstrakty

EN

Early Carboniferous (late Tournaisian) conodonts, recovered from siliceous shales and silicites of the Nyan-Vorga Formation within the Lemva tectonic belt of the Polar Urals (Russia), include the biostratigraphically important taxa Siphonodella lanei, Gnathodus typicus, Dollymae hassi, and Scaliognathus anchoralis, marking the following conodont zones of the upper Tournaisian: crenulata, typicus, and anchoralis. Associated species include representatives of genera Siphonodella, Polygnathus, Pseudopolygnathus, Dollymae, Gnathodus, Kladognathus, and Idioprioniodus. These conodont faunas provide the first biostratigraphically constrained correlations between bathyal deposits of the Lemva Allochthone in the Polar Urals and the “standard” conodont zonation. Ostracodes found in the silicite of the typicus Zone are represented by Sagittibythere ? sp. and Tricornina (Bohemia) sp. The ostracodes are reported from the bathyal deposits of Urals for a first time. The traces of the global Mid-Aikuanian Event are recognized in the upper part of the Tournaisian bathyal succession. This event led to turnover in conodont associations and is followed by increasing in conodont diversity.

Słowa kluczowe

EN

Carboniferous; conodonts; ostracodes; bathyal; Polar Urals

PL

karbon; konodonty; ostrakodermy; Ural Północny

• Wydawca: De Gruyter
• Czasopismo: Contemporary Trends in Geoscience
• Rocznik: 2018
• Tom: Vol. 7, iss. 1
• Strony: 48--58
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Zhuravlev A. V.

• N.P.Yushkin Institute of Geology Komi SC UrB RAS, 54 Pervomayskaya St., Syktyvkar, Russia

autor

Sobolev D. B.

• N.P.Yushkin Institute of Geology Komi SC UrB RAS, 54 Pervomayskaya St., Syktyvkar, Russia

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).