- Tytuł:
- Conodonts and ostracodes from the late Tournaisian bathyal sequence of the Polar Urals
- Autorzy:
-
Zhuravlev, A. V.
Sobolev, D. B. - Powiązania:
- https://bibliotekanauki.pl/articles/100765.pdf
- Data publikacji:
- 2018
- Wydawca:
- Uniwersytet Śląski. Wydział Nauk o Ziemi
- Tematy:
-
Carboniferous
conodonts
ostracodes
bathyal
Polar Urals
karbon
konodonty
ostrakodermy
Ural Północny - Opis:
- 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.
- Źródło:
-
Contemporary Trends in Geoscience; 2018, 7, 1; 48-58
2299-8179 - Pojawia się w:
- Contemporary Trends in Geoscience
- Dostawca treści:
- Biblioteka Nauki
Artykuł