A new species of the iconic triradial Ediacaran genus Tribrachidium from Nilpena Ediacara National Park, Flinders Ranges (South Australia)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-03-27 DOI:10.1017/jpa.2023.99

Tory L. Botha, D. García‐Bellido

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Abstract

Tribrachidium heraldicum Glaessner in Glaessner and Daily, 1959 is a triradial Ediacaran organism found in abundance within the Ediacara Member of the Flinders Ranges, South Australia. Here we report and describe a new species within the genus Tribrachidium Glaessner in Glaessner and Daily, 1959: Tribrachidium gehlingi new species from Nilpena Ediacara National Park (NENP), South Australia. Tribrachidium gehlingi n. sp. has low relief and three slightly curved, main arm-like structures that leave a conspicuous gap between the end of the arm-like structures and rim. In place of the ‘bulla’ found on T. herladicum, there are three secondary arm-like structures approximately half of the length of the main arm-like structures. Key morphological differences between the two species are statistically significantly different. Additionally, the species occur together within the same fossiliferous event horizons, indicating that the observed morphological differences are unlikely a result of taphonomy. UUID: http://zoobank.org/196bef68-54da-42a9-9327-dcb55411a457

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来自弗林德斯山脉（南澳大利亚）Nilpena Ediacara 国家公园的标志性三辐射埃迪卡拉属新物种 Tribrachidium

Tribrachidium heraldicum Glaessner in Glaessner and Daily, 1959 是一种在南澳大利亚弗林德斯山脉埃迪卡拉成因中发现的大量三辐射埃迪卡拉生物。我们在此报告并描述了 Glaessner 和 Daily 于 1959 年发现的 Tribrachidium 属中的一个新物种：来自南澳大利亚 Nilpena Ediacara 国家公园（NENP）的新物种 Tribrachidium gehlingi。Tribrachidium gehlingi n. sp.具有低浮雕和三个略微弯曲的主臂状结构，在臂状结构的末端和边缘之间留有明显的间隙。代替 T. herladicum 上的 "鼓包 "的是三个次生臂状结构，长度约为主臂状结构的一半。这两个物种的主要形态差异在统计学上有显著差异。此外，这两个物种同时出现在同一化石事件地层中，这表明所观察到的形态差异不太可能是出土的结果。UUID: http://zoobank.org/196bef68-54da-42a9-9327-dcb55411a457

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.