Note on the only known record of a cupulate seed from the Middle Pennsylvanian Sydney Coalfield, Nova Scotia, Canada

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-09-18 DOI:10.4138/atlgeol.2021.011

E. Zodrow

引用次数: 0

Abstract

The only known lyginopterid cupulate seed collected from the Middle Pennsylvanian Sydney Coalfield in Nova Scotia, Canada, comprises a coalified cupule surrounding an ovate structure 3×2 mm in size that is interpreted as an ovule. The ovule is white, reflecting its calcitic mode of preservation, and lacks cellular remains. As the specimen is incomplete, a detailed taxonomic determination is not possible, but its affinities lie within the lyginopterid (or hydrasperman) pteridosperms. This significant discovery of a lyginopterid pteridosperm aug-ments previous accounts of medullosalean pteridosperms from the flora of Sydney Coalfield.

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加拿大新斯科舍省宾夕法尼亚中期悉尼煤田杯状种子的唯一已知记录

从加拿大新斯科舍省的中宾夕法尼亚悉尼煤田收集的唯一已知的lyginopterid丘形种子包括一个围绕卵形结构3×2毫米的联合对偶，这被解释为胚珠。胚珠呈白色，反映其钙质保存方式，缺乏细胞残余。由于标本不完整，不可能进行详细的分类确定，但它的亲缘关系属于lyginopterid(或hydrasperman)翼类。这一重大发现增加了先前悉尼煤田植物区系中关于延髓类蕨类植物的记载。

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.