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首页> 外文期刊>Journal of Systematic Palaeontology >Revision of the Eocene artiodactyls (Mammalia, Placentalia) from Aumelas and Saint-Martin-de-Londres (Montpellier limestones, Herault, France) questions the early European artiodactyl radiation
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Revision of the Eocene artiodactyls (Mammalia, Placentalia) from Aumelas and Saint-Martin-de-Londres (Montpellier limestones, Herault, France) questions the early European artiodactyl radiation

机译：从Aumelas和Saint-Martin-de-Londres（Montpellier Limestone，Herault，法国）的艾塞内纳山雀（哺乳动物，胎石）修订了欧洲早期的欧二酰胺辐射

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摘要

The fossiliferous localities of Aumelas and Saint-Martin-de-Londres in the Montpellier limestones (Herault, France), known since the 1960s and 1980s, were originally dated as late middle Eocene (Lutetian), close to the European Mammal Palaeogene Reference Level 13 (MP13). This period is a key time interval in the initial radiation of European endemic mammals. We present here a systematic revision of the artiodactyl fauna from Aumelas and Saint-Martin-de-Londres in order to propose a biochronological revision of these localities. We identified five artiodactyl species:Aumelasia gabineaudi,Dichobuneaff.robertiana,Eurodexiscf.russelli, Eurodexeinae indet. andLophiobunodon minervoisensis. Two of these species are known in both localities. Comparisons with other European localities support an earlier dating than late middle Eocene for Aumelas and Saint-Martin-de-Londres. These localities seem to be close to the Ypresian/Lutetian boundary and could constitute a rare record of this period in Europe. The age of these localities is critical for discussing the initial radiations of endemic European artiodactyl families (Cebochoeridae, Choeropotamidae, Mixtotheriidae, Anoplotheriidae, Xiphodontidae, Cainotheriidae and Amphimerycidae). This systematic revision allows us to test the validity of phylogenetic relationships between these families using cladistic analyses. Our results question the monophyly of Dichobunidae and Choeropotamidae but support the older concept of Haplobunodontidae. This study, which constitutes a first step towards a better understanding of their evolutionary history, suggests that the European artiodactyl radiation took place close to the Ypresian/Lutetian boundary.
机译：自20世纪60年代和20世纪80年代以来，蒙彼利埃石灰石（法国Herault）（法国Herault，法国）的奥斯佩拉斯和圣马丁 - 德伦斯（Herault）最初被称为中东期半岛（Lutetian），接近欧洲哺乳动物古物代参考等级13 （MP13）。这一时期是欧洲特有哺乳动物初始辐射的关键时间间隔。我们在这里展示了来自奥比尔斯和圣马丁 - DE-Londres的ArtiodActyl Dauna的系统修订，以提出这些地方的生物结构修订。我们确定了五种亚偶琥珀酰胺：aumelasia gabineaudi，Dichobuneaff.Robertiana，Eurodexiscf.Russelli，Eurodexeinae Indet。 andlophiobunodon minervoisensis。这些物种中的两种在两个地方都是已知的。与其他欧洲地方的比较支持早期约会，而不是半欧茂和圣马丁德伦德斯的后期约会。这些地方似乎接近Ypresian / Lutetian边界，可以构成欧洲这一时期的罕见记录。这些地方的年龄至关重要讨论地方性欧洲抗碘酰胺酸的初始辐射（Cebochoeridae，Choeropotainaida，Mixtothertiidae，anoplotheriidae，Xiphodontidaida，Cainotheriidae和Amphimerycidae）。这种系统修正使我们能够使用界面分析来测试这些家庭之间的系统发育关系的有效性。我们的结果质疑二均多亚和纳米托巴托纳米德的一切性，但支持较旧的Haplobunodontidae的概念。这项研究构成了更好地了解其进化历史的第一步，表明欧洲偶联辐射辐射靠近Ypresian / Lutetian边界。

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