Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implications
Pectocaris species are intermediate- to large-sized Cambrian bivalved arthropods. Previous studies have documented Pectocaris exclusively from the Cambrian Series 2 Stage 3 Chengjiang biota in Yu’anshan Formation, Chiungchussu Stage in SW China. In this study, we report Pectocaris paraspatiosa sp. n...
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PeerJ Inc.
2024-04-01
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| author | Changfei Jin Hong Chen Huijuan Mai Xianguang Hou Xianfeng Yang Dayou Zhai |
| author_facet | Changfei Jin Hong Chen Huijuan Mai Xianguang Hou Xianfeng Yang Dayou Zhai |
| author_sort | Changfei Jin |
| collection | DOAJ |
| description | Pectocaris species are intermediate- to large-sized Cambrian bivalved arthropods. Previous studies have documented Pectocaris exclusively from the Cambrian Series 2 Stage 3 Chengjiang biota in Yu’anshan Formation, Chiungchussu Stage in SW China. In this study, we report Pectocaris paraspatiosa sp. nov., and three other previously known Pectocaris from the Xiazhuang section in Kunming, which belongs to the Hongjingshao Formation and is a later phase within Cambrian Stage 3 than the Yu’anshan Formation. The new species can be distinguished from its congeners by the sparsely arranged endopodal endites and the morphologies of the abdomen, telson, and telson processes. We interpret P. paraspatiosa sp. nov. as a filter-feeder and a powerful swimmer adapted to shallow, agitated environments. Comparison among the Pectocaris species reinforces previous views that niche differentiation had been established among the congeneric species based on morphological differentiation. Our study shows the comprehensive occurrences of Pectocaris species outside the Chengjiang biota for the first time. With a review of the shared fossil taxa of Chengjiang and Xiaoshiba biotas, we identify a strong biological connection between the Yu’anshan and Hongjingshao Formations. |
| first_indexed | 2024-04-24T08:02:22Z |
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| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-04-24T08:02:22Z |
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| spelling | doaj.art-17172142868d42beb7cbb046f741217a2024-04-17T15:05:15ZengPeerJ Inc.PeerJ2167-83592024-04-0112e1723010.7717/peerj.17230Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implicationsChangfei Jin0Hong Chen1Huijuan Mai2Xianguang Hou3Xianfeng Yang4Dayou Zhai5Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, ChinaSchool of Biological Sciences and Technology, Liupanshui Normal University, Liupanshui, ChinaYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, ChinaYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, ChinaYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, ChinaYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, ChinaPectocaris species are intermediate- to large-sized Cambrian bivalved arthropods. Previous studies have documented Pectocaris exclusively from the Cambrian Series 2 Stage 3 Chengjiang biota in Yu’anshan Formation, Chiungchussu Stage in SW China. In this study, we report Pectocaris paraspatiosa sp. nov., and three other previously known Pectocaris from the Xiazhuang section in Kunming, which belongs to the Hongjingshao Formation and is a later phase within Cambrian Stage 3 than the Yu’anshan Formation. The new species can be distinguished from its congeners by the sparsely arranged endopodal endites and the morphologies of the abdomen, telson, and telson processes. We interpret P. paraspatiosa sp. nov. as a filter-feeder and a powerful swimmer adapted to shallow, agitated environments. Comparison among the Pectocaris species reinforces previous views that niche differentiation had been established among the congeneric species based on morphological differentiation. Our study shows the comprehensive occurrences of Pectocaris species outside the Chengjiang biota for the first time. With a review of the shared fossil taxa of Chengjiang and Xiaoshiba biotas, we identify a strong biological connection between the Yu’anshan and Hongjingshao Formations.https://peerj.com/articles/17230.pdfArthropodNiche differentiationPectocaris paraspatiosaHongjingshao formationXiazhuang assemblage |
| spellingShingle | Changfei Jin Hong Chen Huijuan Mai Xianguang Hou Xianfeng Yang Dayou Zhai Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implications PeerJ Arthropod Niche differentiation Pectocaris paraspatiosa Hongjingshao formation Xiazhuang assemblage |
| title | Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implications |
| title_full | Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implications |
| title_fullStr | Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implications |
| title_full_unstemmed | Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implications |
| title_short | Discovery of diverse Pectocaris species at the Cambrian series 2 Hongjingshao formation Xiazhuang section (Kunming, SW China) and its ecological, taphonomic, and biostratigraphic implications |
| title_sort | discovery of diverse pectocaris species at the cambrian series 2 hongjingshao formation xiazhuang section kunming sw china and its ecological taphonomic and biostratigraphic implications |
| topic | Arthropod Niche differentiation Pectocaris paraspatiosa Hongjingshao formation Xiazhuang assemblage |
| url | https://peerj.com/articles/17230.pdf |
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