Review of Research on Early Cambrian Phosphatized Quadrapyrgites
DOI:
Author:
Affiliation:

Clc Number:

Fund Project:

This work was supported by the National Natural Science Foundation of China (grant #s 41072012), the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (#s 113115 and 20132107), the Key Project of Central University Fund (CHD2012ZD017), and the College Students’ Innovative Entrepreneurial Training Program of Chang’an University (Grant No. 201510710060, 201510710056 and 201510710179).

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The metazoan Quadrapyrgites consists, from proximal to distal ends, of an oral area, a cone, a collar, and an apex from the Early Cambrian Fortunian Stage in Xixiang Zhangjiagou section, southern Shaanxi Province, South China. Three morphological types of the apex, the most characteristic feature of the taxon, are identified from hundreds of Quadrapyrgites specimens. The Quadrapyrgites growth zone is situated at the oral end, where 12 terminal lobes are generated, uplifted, enlarged, and evaginated to form a crest; A one-by-one of crest number from 2 to 13 has been recognized. The unique growth pattern and ontogenetic sequence refute a cubozoan or cycloneuralian affinity for Olivooides and Quadrapyrgites, and instead defend a coronate scyphozoan hypothesis. An embryonic development and ontogenetic sequence with embryo and crest is constructed.

    Reference
    Related
    Cited by
Get Citation

SHAO Tiequan, WANG Qi, LIU Yunhuan, ZHANG Yanan, LI Hewei, HU Bo, LI Chuang, DONG Zhiguo, ZHANG Hongtao.2015. Review of Research on Early Cambrian Phosphatized Quadrapyrgites[J]. Acta Geologica Sinica(),89(4):1398-1405

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:June 04,2015
  • Revised:July 05,2015
  • Adopted:
  • Online: August 14,2015
  • Published: