中国西北志留纪淡水节肢动物

IF 2.3 2区 地球科学 Q1 PALEONTOLOGY
Ruiwen Zong, G. Edgecombe, Bingcai Liu, Yi Wang, Jiayi Yin, Juan Ma, Honghe Xu
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引用次数: 2

摘要

动物脱离海洋是生命进化史上的一个革命性事件。节肢动物是最早迁移到陆地上的后生动物,尽管到目前为止发现了一些志留纪的淡水和/或陆生节肢动物,但这些记录都来自Laurussia。本文报道了一种新的淡水节肢动物Maldybulakia saerensis sp. nov.,产自中国西北准噶尔西部。来自共生孢子和植物体化石的证据支持这个新的Maldybulakia物种的志留纪(Pridoli)时代,以及古盐度数据支持我们对它生活在淡水环境中的解释。这一物种的发现将Maldybulakia最早的出现时间提前到了志留纪晚期,之前已知的Maldybulakia出现在哈萨克斯坦和澳大利亚东部的泥盆纪。这是除Laurussia外最古老的淡水节肢动物的身体化石记录,极大地扩展了它们的古地理分布。在志留纪中晚期,在多个板块/地质体上发现了淡水节肢动物,以及这一时期的形态多样性,表明节肢动物在志留纪早期甚至更早的时候离开了海洋环境。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Silurian freshwater arthropod from northwest China
Animals breaking away from the sea was a revolutionary event in the evolution of life. Arthropods were the earliest metazoans to move onto land, and although a few Silurian freshwater and/or terrestrial arthropods have been found so far, these records are all from Laurussia. Here, we describe a new freshwater arthropod, Maldybulakia saierensis sp. nov., from the western Junggar, northwest China. Evidence from co‐occurring spores and body fossils of plants is presented in support of a Silurian (Pridoli) age for this new Maldybulakia species, alongside palaeosalinity data in support of our interpretation of it having lived in a freshwater environment. The discovery of this species brings forward the earliest appearance of the Maldybulakia, previously known from the Devonian of Kazakhstan and eastern Australia, to the late Silurian. It is the oldest body fossil record of a putatively freshwater arthropod outside Laurussia, and greatly expands their palaeogeographical distribution. In the middle and late Silurian, the discovery of freshwater arthropods on multiple plates/terranes, as well as their morphological diversity during this period, suggests that arthropods had left the marine environment by the early Silurian or even earlier.
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来源期刊
Papers in Palaeontology
Papers in Palaeontology PALEONTOLOGY-
CiteScore
4.50
自引率
4.30%
发文量
55
期刊介绍: Papers in Palaeontology is the successor to Special Papers in Palaeontology and a journal of the Palaeontological Association (www.palass.org). The journal is devoted to the publication of papers that document the diversity of past life and its distribution in time and space. Papers in Palaeontology is devoted to the publication of papers that document the diversity of past life and its distribution in time and space. As a sister publication to Palaeontology its focus is on descriptive research, including the descriptions of new taxa, systematic revisions of higher taxa, detailed biostratigraphical and biogeographical documentation, and descriptions of floras and faunas from specific localities or regions. Most contributions are expected to be less than 30 pp long but longer contributions will be considered if the material merits it, including single topic parts. The journal publishes a wide variety of papers on palaeontological topics covering: palaeozoology, palaeobotany, systematic studies, palaeoecology, micropalaeontology, palaeobiogeography, functional morphology, stratigraphy, taxonomy, taphonomy, palaeoenvironmental reconstruction, palaeoclimate analysis, biomineralization studies.
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