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首页> 外文期刊>Journal of Paleontology >Reevaluation and taxonomic clarification of Gigantopteridium and Cathaysiopteris of western equatorial Pangea and their biogeographical significance
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Reevaluation and taxonomic clarification of Gigantopteridium and Cathaysiopteris of western equatorial Pangea and their biogeographical significance

机译：西部赤字术治疗吉伐不肌的重新评估和分类澄清及其生物地图意义

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摘要

A reassessment of the taxonomic relationships of North American gigantopterids is presented in light of an examination of large populations of specimens housed in the US National Museum of Natural History. Variations in venation and subtle aspects of leaf shape facilitate refined understanding of the relationships and diversity of the North American gigantopterid species leading to an improved understanding of the taxonomic and biogeographic relationships of this group, which are found most abundantly in western equatorial Pangea and Cathaysia. Current literature suggests that there are eight North American genera, however, this study has revealed a morphological overlap of several previously defined genera, leading to the conclusion that Gigantopteridium encompasses the species previously treated as Cathaysiopteris yochelsonii as well as a new species, Gigantopteridium utebaturianum. The transfer of C. yochelsonii to Gigantopteridium yochelsonii suggests that Cathaysiopteris may represent a genus endemic to Cathaysia, limiting the biogeographical connection between the regions to Zeilleropteris, Gigantopteridium, Euparyphoselis, and Gigantonoclea.
机译：鉴于对美国国家自然历史博物馆的大量标本的考察，提出了对北美GigantopTerids的分类学关系的重新评估。叶形的静脉和微妙方面的变化有助于精致了解北美吉替动物物种的关系和多样性，从而提高了对该组的分类和生物地理关系的改善，这些终结在西部赤道洞穴和国泰岛最丰富。目前的文献表明，有八个北美世代，这项研究揭示了几个先前定义的属的形态重叠，导致Gigantopteridium包括以前被视为Cathaysiopteris yochelsonii的物种以及新物种，Gigantopteridium Utebaturianum。将C. yochelsonii转移到Gigantopteridium yochelsonii的转移表明，Cathaysiopteris可以代表对Cathaysia流行的属性，限制了地区与Zeilleropteris，Gigantopteridium，Euparyphoselis和Gigantonoclea之间的生物地图。

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  • 来源
    《Journal of Paleontology》 |2017年第5期|共12页
  • 作者

    Koll Rebecca A.; DiMichele William A.; Manchester Steven R.;

  • 作者单位

    Univ Florida Dept Biol Florida Museum Nat Hist 1659 Museum Rd POB 117800 Gainesville FL 32611 USA;

    Smithsonian Inst NMNH Dept Paleobiol Washington DC 20560 USA;

    Univ Florida Dept Biol Florida Museum Nat Hist 1659 Museum Rd POB 117800 Gainesville FL 32611 USA;

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  • 正文语种 eng
  • 中图分类 古生物学;
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