The first edrioasteroid echinoderm from the lower Cambrian Chengjiang biota of Yunnan Province, China
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Issue date
2022-07-07Submitted date
2022-01-21Subject Terms
echinodermedrioasteroid
Cambrian
Chengjiang
biota
South China
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Show full item recordAbstract
Until now, the earliest fossil echinoderms have been predominantly known from the early Cambrian of Laurentia and West Gondwana. Here, we describe Sprinkleoglobus extenuatusgen. et sp. nov. from the Chengjiang biota (Cambrian Series 2, Stage 3) of Yunnan Province, China. The over-all profile of the theca and the morphology of the ambulacra clearly establish it as an edrioasteroid echinoderm. This represents the first discovery of an unequivocal echinoderm from the early part of the Cambrian of South China and is among the oldest records of echinoderms globally. Our material shows that edrioasteroids were diverse and widely distributed from their first occurrence in the fossil record, suggesting an earlier origin for the group. We infer that Sprinkleoglobus and other early echinoderms were adapted for attaching to hard substrates, implying that the so-called Cambrian substrate revolution was not a strong control on the early evolution of attachment in echinoderms.Citation
Zhao, J., Rahman, I.A., Zamora, S., Chen, A. and Cong, P. (2022), The first edrioasteroid echinoderm from the lower Cambrian Chengjiang biota of Yunnan Province, China. Pap Palaeontol, 8: e1465. https://doi.org/10.1002/spp2.1465Publisher
WileyJournal
Papers in PalaeontologyType
Journal ArticleItem Description
Copyright: © 2022 The Authors. Papers in Palaeontology published by John Wiley & Sons Ltd on behalf of The Palaeontological Association. This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.ISSN
2056-2799EISSN
2056-2802ae974a485f413a2113503eed53cd6c53
10.1002/spp2.1465
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