Davidharwoodia megaspina gen. et sp. nov. (Corethrales), a new fossil marine diatom genus from Mors, Jutland (early Eocene)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-02 DOI:10.1080/0269249X.2022.2159883

K. Abe, R. Jordan

引用次数: 0

Abstract

A taxonomic survey of the early Eocene diatomites of Mors has revealed a new member of the Corethrales, Davidharwoodia megaspina gen. et sp. nov., which is the first fossil Corethron-like diatom to possess backward-pointing spines. The new species is presumably heterovalvate, with a rounded pyramidal Type 1 valve bearing a single huge leaf-shaped spine (and corresponding large socket) in addition to the narrower spines, and a more elongate helmet-shaped Type 2 valve possessing spines of a different design and twice as many sockets of equal size. The genus can be distinguished from Micrampulla by lacking the large inflated structures emanating from the dome, from Praecorethron by a narrower marginal area and vertically placed sockets, and from Corethron by lacking hooked spines.

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Davidharwoodia megaspina gen. et sp. 11 . (Corethrales)，日特兰摩尔斯(早始新世)海洋硅藻属新化石

对摩尔斯早始新世硅藻的分类调查发现了Corethrales的新成员Davidharwoodia megaspina gen. et sp. nov.，这是第一个具有后指向棘的corethron类硅藻化石。这个新物种可能是异瓣形的，除了较窄的刺外，还有一个圆形的金字塔形的1型阀，它有一个巨大的叶形刺(和相应的大凹槽)，一个更长的盔形2型阀，它有一个不同设计的刺和两倍大小的凹槽。该属与Micrampulla的区别在于缺乏从穹顶中产生的大型膨胀结构，与preecorethron的区别在于有较窄的边缘区域和垂直放置的窝，与Corethron的区别在于缺乏钩状刺。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.