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Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China

The evolution process can be reconstructed by tracking the changes in the dynamic characters of life cycles. A number of related trilobites from the Cambrian of South China provide additional information for the study of trilobite evolutionary patterns, which has been hampered by previous incomplete...

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Autores principales: Chen, Zhengpeng, Zhao, Yuanlong, Yang, Xinglian, Esteve, Jorge, Liu, Xiong, Chen, Shengguang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10100804/
https://www.ncbi.nlm.nih.gov/pubmed/37065692
http://dx.doi.org/10.7717/peerj.15068
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author Chen, Zhengpeng
Zhao, Yuanlong
Yang, Xinglian
Esteve, Jorge
Liu, Xiong
Chen, Shengguang
author_facet Chen, Zhengpeng
Zhao, Yuanlong
Yang, Xinglian
Esteve, Jorge
Liu, Xiong
Chen, Shengguang
author_sort Chen, Zhengpeng
collection PubMed
description The evolution process can be reconstructed by tracking the changes in the dynamic characters of life cycles. A number of related trilobites from the Cambrian of South China provide additional information for the study of trilobite evolutionary patterns, which has been hampered by previous incomplete fossil record though. Here, Balangia and Duyunaspis represent related Cambrian oryctocephalid trilobites from South China, are comprehensively discussed over the ontogeny, and the results show that, from B. balangensis via D. duyunensis to D. jianheensis, their exoskeletal morphology shows a directional evolution. Based on the direction of evolutionary changes in the development of Balangia and Duyunaspis, we speculate that Duyunaspis likely evolved from Balangia instead of Balangia evolved from Duyunaspis, as was previously assumed. This inference is also supported by the phylogenetic tree. This research provides not only a better understanding of the mechanisms of evolution in trilobites, but also new insights for the relationship between developmental evolutionary changes and phylogeny in trilobites.
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spelling pubmed-101008042023-04-14 Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China Chen, Zhengpeng Zhao, Yuanlong Yang, Xinglian Esteve, Jorge Liu, Xiong Chen, Shengguang PeerJ Evolutionary Studies The evolution process can be reconstructed by tracking the changes in the dynamic characters of life cycles. A number of related trilobites from the Cambrian of South China provide additional information for the study of trilobite evolutionary patterns, which has been hampered by previous incomplete fossil record though. Here, Balangia and Duyunaspis represent related Cambrian oryctocephalid trilobites from South China, are comprehensively discussed over the ontogeny, and the results show that, from B. balangensis via D. duyunensis to D. jianheensis, their exoskeletal morphology shows a directional evolution. Based on the direction of evolutionary changes in the development of Balangia and Duyunaspis, we speculate that Duyunaspis likely evolved from Balangia instead of Balangia evolved from Duyunaspis, as was previously assumed. This inference is also supported by the phylogenetic tree. This research provides not only a better understanding of the mechanisms of evolution in trilobites, but also new insights for the relationship between developmental evolutionary changes and phylogeny in trilobites. PeerJ Inc. 2023-04-10 /pmc/articles/PMC10100804/ /pubmed/37065692 http://dx.doi.org/10.7717/peerj.15068 Text en ©2023 Chen et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Evolutionary Studies
Chen, Zhengpeng
Zhao, Yuanlong
Yang, Xinglian
Esteve, Jorge
Liu, Xiong
Chen, Shengguang
Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China
title Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China
title_full Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China
title_fullStr Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China
title_full_unstemmed Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China
title_short Life cycle evolution in the trilobites Balangia and Duyunaspis from the Cambrian Series 2 (Stage 4) of South China
title_sort life cycle evolution in the trilobites balangia and duyunaspis from the cambrian series 2 (stage 4) of south china
topic Evolutionary Studies
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10100804/
https://www.ncbi.nlm.nih.gov/pubmed/37065692
http://dx.doi.org/10.7717/peerj.15068
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