来自法国南部黑山谷罗克梅耶尔的中新世奥齿三叶虫

IF 1.5 3区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Bulletin of Geosciences Pub Date : 2023-10-31 DOI:10.3140/bull.geosci.1885

R. Feist, E.N.K. Clarkson

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引用次数: 0

摘要

位于法国中部丘陵东南边缘的 Roquemaillère 遗址是冈瓦纳大陆北缘少有的发现志留纪齿状三叶虫的地点之一。对M.-C.Chaubet 在她的专著（1937 年）中介绍了从该地点收集到的资料，并增加了新的记录，发现了 Kettneraspis Prantl & Přibyl, 1949，其中有 5 个物种[K . acanthifrons sp、maeander sp. nov.]、Radiaspis Richter & Richter, 1917 with Radiaspis sp.、Laethoprusia Ramsköld, 1991 with L. augur sp. nov.以及 Ceratocephalina Whittington, 1956 with C. angustifurcata sp.从相关的石龙子、腕足类、双壳类和锥齿类动物的证据来看，这些三叶虫属于文洛克荷马晚期。该动物群种类繁多，其中主要是 Kettneraspis 。与之密切相关的 Leonaspis 从志留纪晚期开始就被认为是冈瓦纳相关地层的特征，而该动物群中没有 Leonaspis，这证实了罗克马耶尔动物群的前卢德洛时代。

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Mid-Silurian odontopleurid trilobites from Roquemaillère, Montagne Noire, Southern France

The Roquemaillère site on the southeastern margin of the French Massif Central is one of the rare localities along the Northern Gondwana margin from which Silurian odontopleurid trilobites have been recovered. Revision of M.-C. Chaubet’s collections from this site, presented in her monograph (1937), together with additional new records revealed the presence of Kettneraspis Prantl & Přibyl, 1949 with 5 species [ K . acanthifrons sp. nov., K . cf. juengeri Santel, 2001, K. rojanensis sp. nov., K . anteflexa sp. nov., K . aff. parkini (Siveter, 1989)], Eoleonaspis Sheng, 1974 with E. maeander sp. nov., Radiaspis Richter & Richter, 1917 with Radiaspis sp., Laethoprusia Ramsköld, 1991 with L. augur sp. nov., and Ceratocephalina Whittington, 1956 with C. angustifurcata sp. nov. Evidence from associated graptolites, brachiopods, bivalves and conodonts assigns the trilobites to the late Wenlock Homerian stage. The diverse fauna is dominated, both in specific diversity and number of individuals by Kettneraspis . The absence of the closely related Leonaspis regarded as characterising Gondwana-related terranes from the late Silurian onwards, confirms the pre-Ludlow age of the Roquemaillère fauna.

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来源期刊

Bulletin of Geosciences 地学-地球科学综合

CiteScore

3.10

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： The Bulletin of Geosciences is an international journal publishing original research papers, review articles, and short contributions concerning palaeoenvironmental geology, including palaeontology, stratigraphy, sedimentology, palaeogeography, palaeoecology, palaeoclimatology, geochemistry, mineralogy, geophysics, and related fields. All papers are subject to international peer review, and acceptance is based on quality alone.