意大利南部更新世的生物侵蚀：C caulostrepsis 和 Maeandropolydora 这两个生物属

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-05-12 DOI:10.54103/2039-4942/13448

R. Bromley, A. D'alessandro

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引用次数: 123

摘要

根据来自瑞典伊沃白垩纪沉积物的新材料，特别是来自意大利南部更新世沉积物的新材料，对 Caulostrepsis Clarke 和 Maeandropolydora Voigt 这两个昆虫属进行了重新研究和描述。这两个生物属之间的形态差异被解释为源于不同的基质穿透方式。Maeandropolydora 的长廊从一侧肢体末端延伸（轴向钻孔），而 Caulostrepsis 的长廊从顶点推进（侧向钻孔）。这两种过程的组合产生了中间形态：侧钻孔占主导地位的孔雀石绿（Caulostrepsis contorta）和轴钻孔占主导地位的孔雀石绿（Maeandropolydora decipiens）。U 形结构或由这种基本 U 形结构（C. contorta）发展而来的结构被归入 Caulostrepsis 的形态发生类；根据是否存在叶片、小袋、孔穴和孔槽，将形态发生类区分开来。Maeandropolydora 的不同生物种的特征是有或没有小袋，或者长廊倾向于成对分布、

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BIOEROSION IN THE PLEISTOCENE OF SOUTHERN ITALY: ICHNOGENERA CAULOSTREPSIS AND MAEANDROPOLYDORA

The ichnogenera Caulostrepsis Clarke and Maeandropolydora Voigt are re—examined and redescribed on the basis of new material from Cretaceous deposits at Ivö (Sweden) and in particular from Pleistocene deposits from southern Italy. The morphological differences between the two ichnogenera are explained as having originated by different modes of substrate penetration. Maeandropolydora's gallery is extended from the end of one limb (axial boring), whereas Caulostrepsis's gallery advances at the vertex (lateral boring). Combinations of the two processes give rise to intermediate forms: Caulostrepsis contorta, in which lateral boring prevails and Maeandropolydora decipiens, in which axial boring is predominant. Structures that are U—shaped or produced by elaboration of this basic U—plan (C. contorta) are referred to the ichnogenus Caulostrepsis; the ichnospecies are separated according to presence/absence of vane, pouches, apertural pits and apertural grooves. The different ichnospecies of Maeandropolydora are characterized by presence or absence of pouches or by galleries tending to run in pairs,

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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.