Abstract
The manuscript was written in the mid-1950s, providing the results of survey of an unusual tetrapod burial in the Upper Permian beds of the town of Vyazniki (Vladimir Region). The bone-bearing sand strata form here the top of the Permian beds, which are underlain by clays with conchostracans tentatively dated Early Tatarian. Abundant tetrapod remains obtained in the course of excavations are dominated by isolated bones; these are associated with scales and cranial bones of palaeoniscids, fin spines of hybodontid sharks and coprolites. The tetrapod assemblage includes the kotlassiomorph Bystrowiana permira Vjuschkov, the stegocephalian Dvinosaurus sp. (new species prevailing in number in the assemblage), the dicynodont Dicynodon sp., gorgonopians, therocephalians, and presumably cynodonts, along with procolophonoids (or other small reptiles, such as eosuchians or protorosaurians). The presence of one more stegocephalian is also probable. It is assumed that the Vyazniki assemblage represents an early developmental stage of the Severodvinian pareiasaurian fauna corresponding to the uppermost Lower Tatarian.
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Efremov, I.A. and Vjuschkov, B.P., Catalogue of Permian and Triassic localities of terrestrial vertebrates in the territory of the USSR, Tr. Paleontol. Inst. Akad. Nauk SSSR, 1955, vol. 46, pp. 1–185.
Vjuschkov, B.P., On the fauna of Upper Permian terrestrial vertebrates from the Malaya Kinel’ River, Tr. Paleontol. Inst. Akad. Nauk SSSR, 1955, vol. 49 (Materials of Permian and Triassic Terrestrial Vertebrates of the USSR), pp. 176–189.
Vjuschkov, B.P., New kotlassiomorphs from the Tatarian beds of the European part of the USSR, Tr. Paleontol. Inst. Akad. Nauk SSSR, 1957, vol. 68 (Cotylosaurs and Batrachosaurs from the Upper Permian of the USSR), pp. 89–107.
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Original Russian Text © B.P. Vjuschkov, 2018, published in Paleontologicheskii Zhurnal, 2018, No. 2, pp. 58–65.
The abstract was compiled by V.K. Golubev, A.G. Sennikov, and M.A. Shishkin. The group attribution of the taxa listed in the abstract is retained in accord with the original manuscript. (Hereinafter the footnotes are provided by V.K. Golubev, A.G. Sennikov, and M.A. Shishkin).
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Vjuschkov, B.P. Locality of Permian Terrestrial Vertebrates in the Vicinity of the Town of Vyazniki. Paleontol. J. 52, 168–174 (2018). https://doi.org/10.1134/S0031030118020144
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DOI: https://doi.org/10.1134/S0031030118020144