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Paleoecological Significance of Complex Fossil Associations of the Eldonioid Pararotadiscus guizhouensis with other Faunal Members of the Kaili Biota (Stage 5, Cambrian, South China)

Published online by Cambridge University Press:  30 April 2018

Yuanlong Zhao
Affiliation:
College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, China 〈zhaoyuanlong@126.com〉, 〈mkwang1986@163.com〉, 〈yangxinglian2002@163.com〉, 〈ynyang333@163.com〉, 〈liuyujuan0102@163.com〉
Mingkun Wang
Affiliation:
College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, China 〈zhaoyuanlong@126.com〉, 〈mkwang1986@163.com〉, 〈yangxinglian2002@163.com〉, 〈ynyang333@163.com〉, 〈liuyujuan0102@163.com〉
Steven T. LoDuca
Affiliation:
Department of Geography and Geology, Eastern Michigan University, Ypsilanti, Michigan, 48197, USA 〈sloduca@emich.edu〉
Xinglian Yang
Affiliation:
College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, China 〈zhaoyuanlong@126.com〉, 〈mkwang1986@163.com〉, 〈yangxinglian2002@163.com〉, 〈ynyang333@163.com〉, 〈liuyujuan0102@163.com〉
Yuning Yang
Affiliation:
College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, China 〈zhaoyuanlong@126.com〉, 〈mkwang1986@163.com〉, 〈yangxinglian2002@163.com〉, 〈ynyang333@163.com〉, 〈liuyujuan0102@163.com〉
Yujuan Liu
Affiliation:
College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, China 〈zhaoyuanlong@126.com〉, 〈mkwang1986@163.com〉, 〈yangxinglian2002@163.com〉, 〈ynyang333@163.com〉, 〈liuyujuan0102@163.com〉
Xin Cheng
Affiliation:
Institute of Vertebrate Paleontology and Paleoanthropology, China Academy of Sciences, Beijing 100044, China 〈cheng_xin1982@126.com〉

Abstract

The planktonic medusiform taxon Pararotadiscus guizhouensis (Zhao and Zhu, 1994) is one of the most abundant components of the Kaili Biota. Many specimens are in direct association with other taxa, including trilobites, brachiopods, hyolithids, echinoderms, and algae, as well as the trace fossil Gordia. Four types of interrelationships between P. guizhouensis and associated fossils are recognized: symbiosis, co-burial, attachment of benthic taxa on P. guizhouensis carcasses, and scavenging of P. guizhouensis carcasses. These associations of P. guizhouensis within the Kaili Biota are unique among occurrences of medusiform fossils in Burgess Shale-type biotas worldwide and provide important insights concerning ecological complexity in the Kaili Biota and in Cambrian marine communities in general.

Type
Cambrian Explosion Special Issue
Copyright
Copyright © 2018, The Paleontological Society 

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