The state of knowledge of the jaguar Panthera onca (Linnaeus, 1758) (Carnivora, Felidae) during the Quaternary in Uruguay

IF 1.2 4区地球科学 Q3 PALEONTOLOGY

Comptes Rendus Palevol Pub Date : 2022-09-08 DOI:10.5852/cr-palevol2022v21a31

Aldo Manzuetti, W. Jones, D. Perea, M. Ubilla, Andrés Rinderknecht, P. Toriño

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引用次数: 5

Abstract

Felids are the top predators in the environments they inhabit. They entered South America at the Pliocene-Pleistocene boundary, but their fossil record in Uruguay, although informative, is scarce. In the present contribution, three new materials (two hemimandibles and an isolated first lower molar) assigned to Panthera onca (Linnaeus, 1758) are described. This material came from Quaternary sediments (Sopas, Dolores, and Libertad Formations) from several localities in Uruguay. Based on this material, different aspects of the paleobiology and paleoecology of jaguars are discussed. Remains of these felids were previously listed but never described; thus, the material analyzed here is the first fossil records reliably determined for P. onca in Uruguay. These felids would have shared an ecological niche with other large carnivores during the late Pleistocene in Uruguay, such as saber-toothed cats (Smilodon populator Lund, 1842; S. fatalis Leidy, 1868), Puma concolor Linnaeus, 1771, and short face bears Arctotherium Burmeister, 1879; and they would have fed upon medium-sized herbivores, principally in vegetated environments.

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乌拉圭第四纪美洲虎Panthera onca (Linnaeus, 1758)(食肉目，猫科动物科)的认识状况

猫科动物是它们所栖息环境中的顶级捕食者。它们在上新世-更新世边界进入南美洲，但它们在乌拉圭的化石记录虽然提供了信息，但却很少。在本文中，描述了三种新材料(两个半下颌骨和一个分离的第一下臼齿)归属于Panthera onca (Linnaeus, 1758)。这些材料来自乌拉圭几个地方的第四纪沉积物(Sopas、Dolores和Libertad组)。在此基础上，对美洲虎的古生物学和古生态学的不同方面进行了讨论。这些猫科动物的遗迹以前曾被列出，但从未被描述过;因此，这里分析的材料是第一个可靠地确定乌拉圭的弓形虫的化石记录。在乌拉圭更新世晚期，这些猫科动物可能与其他大型食肉动物共享一个生态位，如剑齿虎猫(Smilodon populator Lund, 1842;S. fatalis Leidy, 1868年)，Linnaeus, 1771年，美洲狮，和短面熊，1879年;它们会以中等大小的食草动物为食，主要是在植被环境中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Comptes Rendus Palevol 地学-古生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

17.6 weeks

期刊介绍： Comptes Rendus Palevol is a fully electronic and peer-reviewed journal, with a continuous publication stream, devoted to palaeontology, prehistory and evolutionary sciences. It publishes original research results, in French or English, in the following domains: systematic and human palaeontology, prehistory, evolutionary biology and macroevolution, and history of sciences. Thematic issues may also be published under the responsibility of a guest editor. All articles published in Comptes Rendus Palevol are compliant with the different nomenclatural codes. A copyright assignment will be signed by the authors before publication.