推定的三叠纪干哺乳动物 Tikitherium copei 是新近纪的鼩鼱类

IF 1.6 3区生物学 Q2 ZOOLOGY Journal of Mammalian Evolution Pub Date : 2024-02-28 DOI:10.1007/s10914-024-09703-w

Alexander O. Averianov, Leonid L. Voyta

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引用次数: 0

摘要

根据印度上三叠世蒂基地层中的一颗牙齿（被鉴定为上臼齿）建立了推定的哺乳动物类群 Tikitherium copei。该类群最初被认为是卡尼安时代的类群，被认为是化石记录中最古老的哺乳动物类群。我们的研究结果表明，这颗牙齿实际上代表了一种新近纪鳄形类食虫动物（Lipotyphla目）的最后一颗上前臼齿（P4）。

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Putative Triassic stem mammal Tikitherium copei is a Neogene shrew

The putative stem mammal taxon Tikitherium copei was erected based on a single tooth, identified as an upper molar, from the Upper Triassic Tiki Formation of India. Originally thought to be Carnian in age, this taxon was regarded as the oldest mammaliaform in the fossil record. We show that this tooth actually represents the last upper premolar (P4) of a Neogene crocidurine soricid insectivore (order Lipotyphla).

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来源期刊

Journal of Mammalian Evolution ZOOLOGY-

CiteScore

4.30

自引率

10.50%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Mammalian Evolution is a multidisciplinary forum devoted to studies on the comparative morphology, molecular biology, paleobiology, genetics, developmental and reproductive biology, biogeography, systematics, ethology and ecology, and population dynamics of mammals and the ways that these diverse data can be analyzed for the reconstruction of mammalian evolution. The journal publishes high-quality peer-reviewed original articles and reviews derived from both laboratory and field studies. The journal serves as an international forum to facilitate communication among researchers in the multiple fields that contribute to our understanding of mammalian evolutionary biology.