Biostratigraphy and important biotic events in the Western Verkhoyansk Region around the Sakmarian–Artinskian boundary

Кутыгин, Р. В.; Бяков, А. С.; Makoshin, V. I.; Будников, И. В.; Peregoedov, L. G.; Krivenko, Olga

doi:10.1016/j.palwor.2018.10.001

Cited by 12 publications

(1 citation statement)

References 19 publications

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“…Ganelin [17] identified the Insignis Lone (provincial zone), which is well traced on the Omolon Massif and beyond. In Western Verkhoyanie, when J. insignis occurred in the monotonous section of the Echij Formation, it became possible to draw the boundary between the Khorokytian and Echian Regional Stages [18], although there have been no ammonoid finds [19]. In the lower reaches of the Lena River, the Insignis Zone with numerous representatives of the index species contained in it was previously isolated by us in the Kubalakh section in the middle part of the Tuora-Sis Formation (Member 3) [20].…”

Section: Resultsmentioning

confidence: 99%

Asselian–Sakmarian Brachiopod Zonation of the Left Bank of the Lower Reaches of the Lena River, Northeast Russia

Makoshin¹,

Kutygin²

2022

Uch. Zap. Kazan. Univ. Ser. Estestv. Nauki

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This article summarizes the results of our study of the Early Permian brachiopods collected 5.9-6.3 km northwest of the village of Chekurovka that were used to develop the first biostratigraphic zonation of the Asselian-Sakmarian deposits on the left bank of the lower reaches of the Lena River. At the base of the Permian section, the Jakutoproductus lenensis Beds were identified. They are overlain by the Jakutoproductus insignis Zone with numerous shells of the index species. The Jakutoproductus terechovi and Jakutoproductus rugosus Zones, which are characterized by index species, occur even higher in the section. The boundary between the Khorokytian and Echian Regional Stages is defined by the first occurrence of J. insignis at the base of the Insignis Zone. The identified zonal sequence is identical to the previously studied Kubalakh section on the right bank of the lower reaches of the Lena River. However, the thickness of the biostratigraphic zones on the left bank is reduced by half, and a significant lower part of the Khorokytian Regional Stage (below the Lenensis Beds) is missing because it falls on the stratigraphic break between the Cambrian and Permian deposits. The zonation performed shows that there is a direct correlation between the Chekurovka section and the Asselian-Sakmarian deposits of Western Verkhoyanie and the Omolon Massif due to common index species of the biostratigraphic units.

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Section: Resultsmentioning

confidence: 99%

Asselian–Sakmarian Brachiopod Zonation of the Left Bank of the Lower Reaches of the Lena River, Northeast Russia

Makoshin¹,

Kutygin²

2022

Uch. Zap. Kazan. Univ. Ser. Estestv. Nauki

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Method of estimating sea‐surface paleotemperatures through biotic proxies: A case study in Upper Paleozoic paleoclimatic, paleogeographic and paleotectonic reconstructions of Siberia

Davydov,

Karasev,

Popova

et al. 2024

Ecology and Evolution

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This study introduces a novel approach for quantitatively assessing sea‐surface paleotemperatures examined in the Upper Paleozoic of Siberia, utilizing the obtained in the region data as a case study of the use of this method. The method relies on evaluating the taxonomic composition and ecological proxies of biota. It utilizes a comprehensive dataset encompassing the geographic distribution and ecology of various biotic groups in Siberia and adjacent regions, leveraging the newly developed by the authors large PaleoSib database and partially the Paleobiology Database (paleobiology.org) The taxonomy has been used according to the database of Global Biodiversity Information Facility (gbif.org). Fossils collected from individual locations often exhibit a wide spectrum of paleotemperatures. To address this variability, we developed an algorithm for calculating average biotic paleotemperatures in each locality/time slice. Our computations of the available data have unveiled a coherent pattern of paleoclimate dynamics, particularly Sea Surface Temperature, across Siberian basins and surrounding areas during the Late Paleozoic era. These findings significantly contribute to a refined comprehension of paleoclimate and paleotectonic dynamics in the region during that specific time. To enhance paleotemperature analyses, we have integrated lithological indices with biotic ones, fortifying the overall methodology and furnishing a more robust framework for interpreting paleoclimate data. The method could be a helpful tool in regional and interregional studies, regardless of the utilized rock's age and fossil groups.

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Permian stratigraphy and paleogeography of Central Siberia (Angaraland) – A review

Будников

Кутыгин

Shi

et al. 2020

Journal of Asian Earth Sciences

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Biostratigraphy and important biotic events in the Western Verkhoyansk Region around the Sakmarian–Artinskian boundary

Cited by 12 publications

References 19 publications

Asselian–Sakmarian Brachiopod Zonation of the Left Bank of the Lower Reaches of the Lena River, Northeast Russia

Asselian–Sakmarian Brachiopod Zonation of the Left Bank of the Lower Reaches of the Lena River, Northeast Russia

Method of estimating sea‐surface paleotemperatures through biotic proxies: A case study in Upper Paleozoic paleoclimatic, paleogeographic and paleotectonic reconstructions of Siberia

Permian stratigraphy and paleogeography of Central Siberia (Angaraland) – A review

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