Abstract

The historical sequence of Early Triassic tetrapod communities in the Obshchii Syrt area includes eight consecutive faunal assemblages: this degree of detail in the identification of evolutionary stages is unique on a global scale. Temnospondyl amphibians are the dominant elements in these tetrapod assemblages, with three capitosauromorph groups (capitosaurids, benthosuchids, and trematosaurids) characterized by the widest distribution. Reptile remains are much less frequent. The paper provides a brief overview of the findings of rare and endemic tetrapod groups known from the Lower Triassic of Obshchii Syrt. These include amphibians (qantasids, lonchorhynchids, selenocarine capitosaurids, rhytidosteids, plagiosaurs, some forms of benthosuchids and trematosaurids, and chroniosuchians, the relict anthracosaurs) and reptiles (eosauropterygians, theriodonts, individual procolophonid, protorosaurian, and thecodontian genera). The peculiarity of the systematic composition of the Early Triassic tetrapod communities of Obshchii Syrt and Southern Cis-Urals with respect to that of the coeval fauna of terrestrial vertebrates of the more northern regions of Eastern Europe is emphasized, as is the legitimacy of considering these two areas as a specific region characterized by the distinctive character of their zoogeographical connections.

中文翻译：

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Obshchii Syrt Highland（东欧）三叠纪四足动物群中的稀有和地方性元素。

摘要

Obshchii Syrt地区早期三叠纪四足动物群落的历史序列包括八种连续的动物群落：确定进化阶段的这种详细程度在全球范围内是独一无二的。在这些四足动物的组合中，天南芥两栖动物是主要元素，具有三个分布范围最广的类Capitosauromorph组（capitosaurids，benthosuchids和trematosaurids）。爬行动物遗骸的频率要低得多。本文简要概述了奥布奇奇雪橇犬下三叠纪中稀有和特有的四足动物群的发现。这些动物包括两栖动物（两栖类，腰突类，硒菜皮capitosaurids，Rhytidosteids，斜gio类，某些形式的底栖类和畸形类，以及年代学类，遗骸类的炭疽类）和爬行类（类翅类，theriodonts，个体procolophonid，protorosaurian和thecodontian属。强调了奥布奇奇雪橇和南部顺式乌拉尔的早期三叠纪四足动物群落系统组成相对于东欧北部地区陆生脊椎动物的同期动物区系而言的独特性，同时考虑到这两个方面的合法性也得到了强调作为特定区域的区域，以其动物地理联系的独特性为特征。