First evidence of Ricciaceae in the Jurassic of the Iberian Peninsula (Asturias, NW Spain): Ricciopsis asturicus sp. nov

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2022-09-27 DOI:10.1080/23818107.2022.2124452

Artai A. Santos, L. M. Sender, Laura Piñuela, J. García-Ramos, J. Díez

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引用次数: 4

Abstract

ABSTRACT A new species of liverwort, Ricciopsis asturicus sp. nov., is described from dinosaur-bearing Kimmeridgian (Upper Jurassic) deposits of the Lastres Formation in Asturias (NW Spain, Iberian Peninsula) based on a new combination of taxonomic characters, including differences in thallus shape, branching, segment surface, size, and shape. This new species represents the oldest evidence of bryophyte from the Mesozoic of the Iberian Peninsula so far, and it also represents the first evidence of the genus Ricciopsis in this area. In addition to the description of the Ricciaceae remains, palynological analyses were carried out in order to understand the paleoenvironmental context. The remains of Ricciopsis asturicus sp. nov. were found in life position on grey marly siltstones forming dense mats, suggesting that some areas of the Lastres Formation presented shallow freshwater pools placed in channel abandonment areas into an upper deltaic plain, where these mats of liverworts could proliferate during the apparent semiarid climatic conditions occurring during the deposit of the Lastres Formation. This interpretation is supported by the palynological study, which reveals the presence of ferns and Cheirolepidaceae plants (Leptolepidites sp., Klukisporites sp., and tetrads of Classopollis sp.) in nearby areas.

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伊比利亚半岛侏罗纪(西班牙西北部阿斯图里亚斯)蓖麻科的首个证据:蓖麻属

摘要：根据新的分类特征组合，包括铊形状、分支、节段表面、大小和形状的差异，从阿斯图里亚斯（西班牙西北部，伊比利亚半岛）拉斯特雷斯组的上侏罗纪Kimmeridgian矿床中描述了一个新的苔草属物种Ricciopsis asturicus sp.nov。这个新物种代表了迄今为止伊比利亚半岛中生代苔藓植物的最古老证据，也代表了Ricciopsis属在该地区的第一个证据。除了对Ricciaceae遗迹的描述外，还进行了孢粉学分析，以了解古环境背景。Ricciopsis asturicus sp.nov.的遗骸在形成致密垫的灰色泥灰粉砂岩上发现，这表明Lastres组的一些区域存在浅淡水池，位于进入上三角洲平原的河道废弃区，在那里，这些苔草垫可以在拉斯特雷斯组沉积期间出现的明显的半干旱气候条件下繁殖。这一解释得到了孢粉学研究的支持，该研究揭示了附近地区存在蕨类植物和Cheirolepidaceae植物（Leptolepidites sp.、Klukisporites sp.和Classopollis sp.的四分体）。

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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.

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