A new giant nautilid species from the Middle Jurassic of Luxembourg and Southwest Germany

IF 3 2区 地球科学 Q1 PALEONTOLOGY Swiss Journal of Palaeontology Pub Date : 2023-09-28 DOI:10.1186/s13358-023-00290-6
Robert Weis, Günter Schweigert, Julian Wittische
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Abstract

Abstract In comparison to other cephalopods such as ammonites and belemnites, nautilid shells are relatively rare fossils in Jurassic marine deposits and knowledge of their taxonomy is therefore still patchy. We describe herein a new species of Cenoceras , C. rumelangense , from the early Bajocian Humphriesianum Zone of Luxembourg and Southwest Germany. In Luxembourg, the type material occurs in the ‘Marnes sableuses d’Audun-le-Tiche’ unit, which yields other large-sized cephalopods, such as the largest known belemnite genus, Megateuthis . The new species reaches a remarkable size, with diameters up to 610 mm. Thus, it is amongst the largest known post-Triassic nautilids worldwide, together with Paracenoceras giganteum and Paracenoceras ingens from the Upper Jurassic. Additionally, we discuss some aspects of the taphonomy of these large shells deposited in a shallow marine setting.
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来自卢森堡和德国西南部中侏罗世的一种新的巨型鹦鹉螺
相较于菊石、红石等其他头足类动物,海贝类是侏罗纪海相沉积物中较为罕见的化石,对其分类的认识尚不完整。本文描述了来自卢森堡和德国西南部早期Bajocian Humphriesianum带的一种新物种C. rumelangense。在卢森堡,模式材料出现在' Marnes sableuses d ' audun -le- tiche '单元中,该单元生产其他大型头足类动物,如已知最大的蛭石属,Megateuthis。这种新物种的体型非常大,直径可达610毫米。因此,它是世界上已知的三叠纪后最大的鹦鹉螺之一,与上侏罗纪的Paracenoceras giganteum和Paracenoceras ingens一起。此外,我们还讨论了在浅海环境中沉积的这些大贝壳的埋藏学的一些方面。
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来源期刊
Swiss Journal of Palaeontology
Swiss Journal of Palaeontology Earth and Planetary Sciences-Paleontology
CiteScore
4.30
自引率
16.70%
发文量
17
审稿时长
4 weeks
期刊介绍: The Swiss Journal of Palaeontology publishes original research and review articles of interest to the international community in the fields of palaeontology, taxonomy and systematics, while recognising at the same time the importance of documenting high-quality palaeontological data in a regional context. Palaeobiology in combination with alpha taxonomy is a core topic of the journal. Submitted papers should have an appeal as wide as possible, directed towards an international readership. Contributions should not have been simultaneously submitted elsewhere, and the overlap of content between related articles should be minimal. Duplications of text and the use of previously published illustrations without adequate citation are unacceptable. If a manuscript has two or more authors, both or all have to sign to confirm they all were involved in the work and have agreed to its submission. The preferred manuscript language is UK English, but consistently used US English is also acceptable. We encourage the publication of proceedings of international meetings as well as special thematic issues. Short contributions and book reviews are also accepted. An international editorial team as well as guest editors guarantee that the thematic issues as well as all articles in regular issues are peer-reviewed and meet the highest standards.
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