中新世 Tagay 动物群（东西伯利亚贝加尔湖奥尔洪岛）的 Gliridae 和 Eomyidae（啮齿目）。

IF 1.4 4区地球科学 Q3 BIODIVERSITY CONSERVATION Palaeobiodiversity and Palaeoenvironments Pub Date : 2022-01-01 Epub Date: 2022-11-18 DOI:10.1007/s12549-022-00551-1

Gudrun Daxner-Höck, Thomas Mörs, Ivan A Filinov, Alexander A Shchetnikov, Baatarjav Bayarmaa, Oljuna Namzalova, Margarita A Erbajeva

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摘要

小型哺乳动物Myomiminae indet.(Gliridae), Leptodontomys cf. gansus Zheng and Li, 1982 (Eomyidae) and the new species Keramidomys sibiricus nov. spec.(描述。它们采集于奥尔洪岛Tagay-1剖面中上部的6个地层。仅有几颗孤立的牙齿代表了鼯鼠科的Myomiminae indet.，有两颗牙齿的下颚代表了小型啮齿目Leptodontomys cf. gansus，有几颗孤立的牙齿和一个下颚代表了第二种小型啮齿目Keramidomys sibiricus nov.spec.。Keramidomys sibiricus nov. spec.的祖先牙齿特征表明Keramidomys在亚洲处于早期演化阶段。该动物群的年代为早/中新世过渡时期。

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Gliridae and Eomyidae (Rodentia) of the Miocene Tagay fauna (Olkhon Island, Lake Baikal, Eastern Siberia).

The small mammals Myomiminae indet. (Gliridae), Leptodontomys cf. gansus Zheng and Li, 1982 (Eomyidae) and the new species Keramidomys sibiricus nov. spec. (Eomyidae) are described. They were collected from six layers of the middle to upper part of the Tagay-1 section on Olkhon Island. The glirid Myomiminae indet. is represented by only a few isolated teeth, the small eomyid Leptodontomys cf. gansus by a mandible with two teeth, and the second small eomyid Keramidomys sibiricus nov. spec. by several isolated teeth and a mandible. The ancestral tooth characteristics of Keramidomys sibiricus nov. spec. indicate an early evolutionary stage of Keramidomys in Asia. The suggested age of the assemblage is Early/Middle Miocene transition.

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来源期刊

Palaeobiodiversity and Palaeoenvironments BIODIVERSITY CONSERVATIONPALEONTOLOGY -PALEONTOLOGY

CiteScore

3.90

自引率

14.30%

发文量

期刊介绍： Palaeobiodiversity and Palaeoenvironments is a peer-reviewed international journal for the publication of high-quality multidisciplinary studies in the fields of palaeobiodiversity, palaeoenvironments and palaeobiogeography. Key criteria for the acceptance of manuscripts are a global scope or implications of problems on a global scale significant not only for a single discipline, a focus on the diversity of fossil organisms and the causes and processes of change in Earth’s history. The topics covered include: Systematic studies of all fossil animal / plant groups with a special focus on palaeoenvironmental investigations, palaeoecosystems and climate changes in Earth’s history, environment-organism interaction, comparison of modern and ancient sedimentary environments, palaeoecology and palaeobiogeography.