宜昌地区早志留世(Llandoverian)腕足类一新科Spinochonetidae (fam. nov.)及其意义
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


A New Brachiopod Family Spinochonetidae from the Llandovery (Silurian) in Yichang, Western Hubei, Central China and Its Significance
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    腕足类Spinochonetidae (fam. nov.)是建立在采自宜昌地区兰多维列统罗惹坪组下段中部(上埃隆阶)Spinochonetes Rong, Xu et Yang (1974)和Spinolella (gen. nov.)两个属,以及一个属、种未定的基础上。新科成员仅有从腹壳喙部伸出一根直的腹喙刺,这与Chonetoidea超科内的Strophochonetidae科以及Chonestrophiidae科众成员的铰合部刺都是从腹壳后铰合缘上伸出来的有着本质差别。另外,本文还对Spinochonetes以及它的属型种S. notata Rong, Xu et Yang (1974)进行重要图解和补充描述。与此同时,对Spinolella (gen. nov),以及S. minuta (gen. et sp. nov.)进行描述和对比。据目前所知,新科众成员只分布于我国湖北西部、贵州东北部、陕西南部和四川北部等地区,属于上扬子地台区的土族居民。 因为Spinochonetidae (fam. nov.)属于腕足类独特一个类型,演化极快,贝体极小,保存又很好,因此具有分类学、地层对比,以及恢复古环境等方面的重要价值。

    Abstract:

    A new specific family Spinochonetidae of brachiopods is based on Spinochonetes Rong, Xu et Yang, Spinolella (gen. nov.) and gen. et sp. indet. from the Middle part (Upper Aeronian) of the Lower Member of the Luoreping Formantion in Yichang Aera Western Hubei, Central China (Text table 1), The all members of Spinochonetidae (fam. nov.), only one orthomorph ventral beak spine originating from ventral beak, whereas hinge spines of family Strophochonetidae and family Chonestrophiidae all originating from on posterior ventral hinge margin, therefore they have an essential distinction. In addition, the genus Spinochonetes and its type species S. notata are significant complementally illustrated and described. At the same time, Spinolella (gen. nov.) and its type species S. minuta (gen. et sp. nov.) are described and compared. Up till the present know, the population of new family Spinochonetidae only distributed in Western Hubei, Northeastern Guizhou, Southern Shanxi and Northern Sichuan, South China, and therefor they belong in the local nationality of the Upper Yangtze Platform Region, Southern China. Because Spinochonetidae (fam. nov.) is a specific type of the brachiopos, it is quick-evolution, shell very small and well-preserved. Therefore, the members of new family Spinochonetidae possess the great importances for systematic study, restoring paleoenvironment and stratigraphic correlation of the Llandoverian strata of the Silurian.

    参考文献
    相似文献
    引证文献
引用本文

曾庆銮,张淼,李志宏.2015.宜昌地区早志留世(Llandoverian)腕足类一新科Spinochonetidae (fam. nov.)及其意义[J].地质学报,89(4):681-691.
ZENG Qingluan, ZHANG Miao, Li Zhihong.2015. A New Brachiopod Family Spinochonetidae from the Llandovery (Silurian) in Yichang, Western Hubei, Central China and Its Significance[J]. Acta Geologica Sinica,89(4):681-691.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2013-09-18
  • 最后修改日期:2014-05-23
  • 录用日期:2015-04-02
  • 在线发布日期: 2015-04-02
  • 出版日期: