The rodent fauna from Prat de Cest (Aude, France) and its biochronological implications for the Early Miocene

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios Pub Date : 2024-06-01 DOI:10.1016/j.geobios.2023.12.005

Vincent Luccisano , Xavier Valentin , Géraldine Garcia , Vincent Lazzari

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引用次数: 0

Abstract

The new Prat de Cest locality (Narbonne-Sigean Basin, Aude, France) provides a rodent fauna composed of Pseudocricetodon thaleri, Simplomys aff. aljaphi, Vasseuromys cf. bergasensis, Plesiosminthus myarion and Rhodanomys occitanensis nov. sp. Eomyidae account for more than 78% of the material collected and reflect a humid and forested environment. The presence of Plesiosminthus myarion and Simplomys aff. aljaphi, the evolutionary stage of Pseudocricetodon thaleri, close to the population of Coderet (MP30) but displaying some derived characters shared by Early Miocene populations, and the intermediate morphology and size of R. occitanensis nov. sp. between Rhodanomys transiens and Rhodanomys schlosseri support a basal MN1 age for Prat de Cest. The glirid Vasseuromys cf. bergasensis is the first occurrence of this genus outside Spain and could also be the first occurrence of Vasseuromys bergasensis in the Early Miocene. The unique faunal association found in Prat de Cest paves the way for a possible subdivision of the MN1 biozone.

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Prat de Cest（法国奥德省）的啮齿动物群及其对早中新世的生物年代学影响

新的 Prat de Cest 地点（法国奥德省纳博讷-锡格昂盆地）提供了一个由 Pseudocricetodon thaleri、Simplomys aff. aljaphi、Vasseuromys cf. bergasensis、Plesiosminthus myarion 和 Rhodanomys occitanensis nov. Eomyidae 组成的啮齿动物群，占采集材料的 78%以上，反映了一个潮湿的森林环境。Plesiosminthus myarion 和 Simplomys aff. aljaphi 的存在、Pseudocricetodon thaleri 的进化阶段（接近 Coderet（MP30）种群，但显示出早中新世种群共有的一些衍生特征）以及 R. occitanensis nov. sp.Vasseuromys cf. bergasensis是该属在西班牙以外地区的首次出现，也可能是Vasseuromys bergasensis在早中新世的首次出现。在 Prat de Cest 发现的独特动物组合为 MN1 生物区的可能细分铺平了道路。

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来源期刊

Geobios 地学-古生物学

CiteScore

3.30

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Geobios publishes bimonthly in English original peer-reviewed articles of international interest in any area of paleontology, paleobiology, paleoecology, paleobiogeography, (bio)stratigraphy and biogeochemistry. All taxonomic groups are treated, including microfossils, invertebrates, plants, vertebrates and ichnofossils. Geobios welcomes descriptive papers based on original material (e.g. large Systematic Paleontology works), as well as more analytically and/or methodologically oriented papers, provided they offer strong and significant biochronological/biostratigraphical, paleobiogeographical, paleobiological and/or phylogenetic new insights and perspectices. A high priority level is given to synchronic and/or diachronic studies based on multi- or inter-disciplinary approaches mixing various fields of Earth and Life Sciences. Works based on extant data are also considered, provided they offer significant insights into geological-time studies.