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Article: An intermediate type of medusa from the early Cambrian Kuanchuanpu Formation, South China

Palaeontology - Vol. 63 Part 5 - Cover Image
Publication: Palaeontology
Volume: 63
Part: 5
Publication Date: September 2020
Page(s): 775 789
Author(s): Xing Wang, Jean Vannier, Xiaoguang Yang, Shin Kubota, Qiang Ou, Xiaoyong Yao, Kentaro Uesugi, Osamu Sasaki, Tsuyoshi Komiya, and Jian Han
Addition Information

How to Cite

WANG, X., VANNIER, J., YANG, X., KUBOTA, S., OU, Q., YAO, X., UESUGI, K., SASAKI, O., KOMIYA, T., HAN, J. 2020. . Palaeontology, 63, 5, 775-789. DOI: /doi/10.1111/pala.12483

Author Information

  • Xing Wang - Qingdao Institute of Marine Geology China Geological Survey Qingdao 266071 China
  • Xing Wang - Function Laboratory of Marine Mineral Resources Qingdao National Laboratory for Marine Science & Technology Qingdao 266237 China
  • Jean Vannier - Université de Lyon Université Claude Bernard Lyon 1 CNRS UMR 5276 Laboratoire de géologie de Lyon: Terre, Planètes, Environnement Bâtiment GEODE 2, rue Raphaël Dubois Villeurbanne 69622 France
  • Xiaoguang Yang - State Key Laboratory of Continental Dynamics Shaanxi Key laboratory of Early Life & Environment Department of Geology Northwest University Xi'an 710069 China
  • Shin Kubota - Seto Marine Biological Laboratory Field Science Education & Research Center Kyoto University Shirahama Wakayama 649‐2211 Japan
  • Qiang Ou - Early Life Evolution Laboratory School of Earth Sciences & Resources China University of Geosciences Beijing 100083 China
  • Xiaoyong Yao - School of Earth Science & Land Resources Key Laboratory of Western China's Mineral Resources & Geological Engineering Ministry of Education Chang'an University Xi'an 710054 China
  • Kentaro Uesugi - Japan Synchrotron Radiation Research Institute (JASRI) 1‐1‐1 Kouto, Sayo‐cho, Sayo‐gun Hyogo Japan
  • Osamu Sasaki - Tohoku University Museum Tohoku University 6‐3 Aoba, Aramaki, Aoba‐ku Sendai Japan
  • Tsuyoshi Komiya - Department of Earth Science & Astronomy Graduate School of Arts & Sciences The University of Tokyo Tokyo 153‐8902 Japan
  • Jian Han - State Key Laboratory of Continental Dynamics Shaanxi Key laboratory of Early Life & Environment Department of Geology Northwest University Xi'an 710069 China

Publication History

  • Issue published online: 30 August 2020
  • Manuscript Accepted: 06 March 2020
  • Manuscript Received: 25 November 2019

Funded By

the ‘111 project’ of Ministry of Education of China. Grant Number: D17013
National Natural Science Foundation of China. Grant Numbers: 41572017, 41621003, 41672009, 41720104002, 41772010
the Scientific and Technological Innovation Project of Qingdao National Laboratory for Marine Science and Technology. Grant Numbers: QNLM201708, 2017ASKJ01, 2016ASKJ13
China‐ASEAN Maritime Cooperation Fund Project. Grant Number: 12120100500017001
the Strategic Priority Research Program of Chinese Academy of Sciences. Grant Number: XDB26000000
the Most Special Fund from the State Key Laboratory of Continental Dynamics, Northwest University, China. Grant Number: BJ11060

Online Version Hosted By

Wiley Online Library
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The tetraradial or pentaradial fossil embryos and related hatched individuals from the early Cambrian Kuanchuanpu Formation are of great interest for understanding the early evolution of medusozoans. The phylogenetic and evolutionary significance of their external and internal characters (e.g. manubrium, tentacles, septa and claustra) is still controversial. Here we describe a new pentamerous medusozoan, Hanagyroia orientalis gen. et sp. nov., characterized by five well‐developed perradial oral lips around a remarkably large manubrium, a conspicuous equatorial groove, and five short interradial pairs of extensile tentacles at the bell margin. Internally, five broad and stout interradial septa join horizontally to form the claustra. Hanagyroia orientalis lacks the frenula, apertural lappet and velarium seen in coeval microfossils and extant cubozoans. Although H. orientalis resembles extant coronate scyphozoans in its round medusa‐like bell margin and equatorial groove, cladistic analysis suggests close affinity with cubozoans. Hanagyroia may represent an intermediate morphological type between scyphozoans and cubozoans. The well‐developed oral lips and paired short strong tentacles of Hanagyroia suggest direct development.

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