New probable cnidarian fossils from the lower Cambrian of the Three Gorges area, South China, and their ecological implications
New probable cnidarian fossils from the lower Cambrian of the Three Gorges area, South China, and their ecological implications
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华南三峡地区下寒武统新的可能的刺胞动物化石及其生态意义
DOI：
10.1016/j.palaeo.2018.05.039
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发表时间：
2018-09
期刊：
影响因子：
--
通讯作者：
Shi Min
中科院分区：
文献类型：
--
作者：
Chang Shan;Sébastien Clausen;Zhang Lei;Feng Qinglai;Michael Steiner;David J. Bottjer;Zhang Yan;Shi Min
三峡地区下寒武统严家河组、水井沱组和石牌组中发现了一组可能与刺胞动物有亲缘关系的磷质和几丁质管状化石组合。TerreneuvianCambrorhytiumcf.C. major-co-cost与一个未命名的分类群在严家河组。它们可与三峡地区埃迪卡拉纪庙河动物群的标本相比较。最丰富和多样化的刺胞动物组合，包括Cambrorhytium gracilisn。例如，大寒武菌，小寒武菌，松林楔皮菌，台江楔皮菌，小崎楔叶菌？楔壳属，? Byroniasp.然后呢？麦肯齐阿斯普上覆寒武系3-4期、水井沱组和石牌组均有报道。这些新化石显示了刺胞动物亲缘关系的未知证据，如附着盘，克隆簇和可能的萌芽结构。这些可能的刺胞动物化石的多样化组合进一步填补了寒武纪干后生动物记录的主要空白，并记录了相关的早期进化模式。此外，我们的发现表明，沿着海绵，这些管状化石代表了另一个重要组成部分的底栖生态系统，殖民往往dysopolysis，深设置在寒武纪爆发。在这些可能的刺胞动物中观察到的平均身体大小和生物矿化的增加暂时与深海环境的氧化作用和埃迪卡拉-寒武纪过渡期间捕食压力的出现有关。
Lower Cambrian assemblages of phosphatic and chitinous tubular fossils of probable cnidarian affinities were recovered from the Yanjiahe, Shuijingtuo and Shipai formations in the Three Gorges area, South China. TerreneuvianCambrorhytiumcf.C.majorco-occur with an unnamed taxon in the Yanjiahe Formation. They can be compared with specimens from the Ediacaran Miaohe Fauna in the Three Gorges area. The most abundant and diversified cnidarian assemblages, includingCambrorhytium gracilisn. sp.,Cambrorhytiumcf.major,Cambrorhytium minor,Sphenothallus songlinensis,Sphenothallus taijiangensis?,Sphenothallus kozaki, ?Sphenothallussp., ?Byroniasp., and ?Mackenziasp. are reported from the overlying, Cambrian Stage 3–4, Shuijingtuo and Shipai formations. These new fossils show previously unknown evidence for cnidarian affinities, such as an attachment disk, clonal clusters and probable budding structures. These diversified assemblages of probable cnidarian fossils further fill major gaps in the Cambrian record of stem metazoans and document associated early evolutionary patterns. In addition, our discovery suggests that along with sponges, these tubular fossils represent another important component of benthic ecosystems that colonized often dysoxic, deep-settings during the Cambrian explosion. The observed increases of average body-size and biomineralization among these probable cnidarians are tentatively linked to oxygenation of deep oceanic settings and appearance of predatory pressure during the Ediacaran–Cambrian transition, respectively.
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影响因子：
3.1
作者：
Wang Xiaofeng;B. Erdtmann;C. Xiaohong;Ma Xiaodong
通讯作者：
Wang Xiaofeng;B. Erdtmann;C. Xiaohong;Ma Xiaodong
DOI：
--
发表时间：
2003
期刊：
Journal of taphonomy
影响因子：
--
作者：
M. Simões;S. Rodrigues;J. Leme;H. V. Iten
通讯作者：
M. Simões;S. Rodrigues;J. Leme;H. V. Iten
影响因子：
5.8
作者：
--Manuscript Draft;Maoyan Zhu;A. Zhuravlev;R. Wood;Fangchen Zhao;Sergey Sokhov
通讯作者：
--Manuscript Draft;Maoyan Zhu;A. Zhuravlev;R. Wood;Fangchen Zhao;Sergey Sokhov
影响因子：
1.4
作者：
C. Mason;E. Yochelson
通讯作者：
C. Mason;E. Yochelson
影响因子：
1.7
作者：
T. Fairchild;E. A. Sanchez;M. L. Pacheco;Juliana de Moraes Leme
通讯作者：
T. Fairchild;E. A. Sanchez;M. L. Pacheco;Juliana de Moraes Leme