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Palaeopascichnids from the Upper Vendian Chernyi Kamen Formation of the Middle Urals (Perm Region)

  • PALEONTOLOGY
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Abstract

In 2020–2021 the palaeopascichnid fossils were found in the Krasnaya Gorka Site (Shirokovsky Reservoir, Kosva River area, Perm Region), a type Vendian fossil locality (problematic discoidal casts and arumberiamorph structures) for the Central Urals discovered by Yu.R. Bekker in 1972. In the stratigraphical context, the fossil locality is associated with Chernyi Kamen Formation of the Upper Vendian Sylvitsa Group. The results of morphometric analysis of palaeopascichnid fossils made possible to distinguish three morphological types: Palaeopascichnus delicatus, Yelovichnus gracilis, and Palaeopascichnus linearis. Finding of a large number of palaeopascichnid fossils both develops the understanding of their palaeobiology and taphonomy, and also demonstrates that palaeontological potential of the type fossil locality and one of the most representative section of the Chernyi Kamen Formation has not entirely been realized.

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ACKNOWLEDGMENTS

Palaeobiological, morphometric and electron microscopical analysis of the palaeopascichnids was carried out by V.D. Desiatkin and A.V. Kolesnikov and was supported by the Russian Science Foundation (grant no. 19-77-00028). Field research of A.V. Kolesnikov, D.V. Desiatkin, A.A. Rimsky, A.O. Sysoeva and V.A. Terekhova has been supported by the RF President Grant (project no. MK-3137.2021.1.5) and Russian Foundation for Basic Research (grant nos. 19-05-00828 and 19-05-00155). Field research of N.B. Kuznetsov and A.V. Shatsillo has been supported by Ministry of Education and Science (Megagrant 075-15-2019-1883 “Orogenesis: Assembly and Growth of Continents and Supercontinents”). This work was carried out on the state assignment of the Geological Institute (GIN RAS).

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Desiatkin, V.D., Kolesnikov, A.V., Rimsky, A.A. et al. Palaeopascichnids from the Upper Vendian Chernyi Kamen Formation of the Middle Urals (Perm Region). Dokl. Earth Sc. 499, 643–647 (2021). https://doi.org/10.1134/S1028334X21080043

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  • DOI: https://doi.org/10.1134/S1028334X21080043

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