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Abstract <p>We present the morphological description and taxonomic identification of pareiasaur postcranial osteoderms from eight Upper Severodvinian localities in Eastern Europe. The localities belong to three stratigraphic levels in the Upper Putyatinian Regional Substage of the Upper Severodvinian: Vanyushonkian, Syominian, and Kichugian beds. The Vanyushonkian Beds are characterized by <i>Deltavjatia rossica</i> (Hartmann-Weinberg). The Syominian Beds contain <i>Proelginia permiana</i> Hartmann-Weinberg, <i>Scutosaurus</i> sp., and Pareiasauria gen. indet. The Kichugian Beds yielded <i>Scutosaurus</i> cf. <i>itilensis</i> Lebedev et Ivachnenko, <i>Scutosaurus</i> sp., <i>Senectosaurus</i> cf. <i>karamzini</i> Boyarinova et Golubev, and Pareiasauridae gen. indet. The presence of the genera <i>Scutosaurus</i> and <i>Senectosaurus</i> is established for the first time in the Upper Severodvinian, in strata with the Ilyinskoe Subassemblage of the Sokolki Assemblage of Permian tetrapods of Eastern Europe.</p>

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Postcranial Osteoderms of Late Permian Pareiasaurs from Eastern Europe. III. Late Severodvinian Pareiasaurs

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • E. I. Boyarinova,
  • V. K. Golubev

摘要

Abstract

We present the morphological description and taxonomic identification of pareiasaur postcranial osteoderms from eight Upper Severodvinian localities in Eastern Europe. The localities belong to three stratigraphic levels in the Upper Putyatinian Regional Substage of the Upper Severodvinian: Vanyushonkian, Syominian, and Kichugian beds. The Vanyushonkian Beds are characterized by Deltavjatia rossica (Hartmann-Weinberg). The Syominian Beds contain Proelginia permiana Hartmann-Weinberg, Scutosaurus sp., and Pareiasauria gen. indet. The Kichugian Beds yielded Scutosaurus cf. itilensis Lebedev et Ivachnenko, Scutosaurus sp., Senectosaurus cf. karamzini Boyarinova et Golubev, and Pareiasauridae gen. indet. The presence of the genera Scutosaurus and Senectosaurus is established for the first time in the Upper Severodvinian, in strata with the Ilyinskoe Subassemblage of the Sokolki Assemblage of Permian tetrapods of Eastern Europe.