Cited by 53Paleontology and Stratigraphy of FossilsGeological formations and processesPaleontology and Evolutionary Biology

The Chengjiang Biota inhabited a deltaic environment

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Saleh, Farid, Qi, Changshi, Buatois, Luis A., Mángano, M. Gabriela, Paz, Maximiliano, Vaucher, Romain, Zheng, Quanfeng, Hou, Xian-Guang +2 more·2022·Nature Communications

Abstract

The Chengjiang Biota is the earliest Phanerozoic soft-bodied fossil assemblage offering the most complete snapshot of Earth’s initial diversification, the Cambrian Explosion. Although palaeobiologic aspects of this biota are well understood, the precise sedimentary environment inhabited by this biota remains debated. Herein, we examine a non-weathered core from the Yu’anshan Formation including the interval preserving the Chengjiang Biota. Our data indicate that the succession was deposited as part of a delta influenced by storm floods (i.e., produced by upstream river floods resulting from ocean storms). Most Chengjiang animals lived in an oxygen and nutrient-rich delta front environment in which unstable salinity and high sedimentation rates were the main stressors. This unexpected finding allows for sophisticated ecological comparisons with other Burgess Shale-type deposits and emphasizes that the long-held view of Burgess Shale-type faunas as snapshots of stable distal shelf and slope communities needs to be revised based on recent sedimentologic advances.

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Crossref · 10.1038/s41467-022-29246-z

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  • Most flows transported organisms from their habitat to environments favorable for their preservation.

    “However, considering that most flows transported organisms from their habitat to environments favorable for their preservation (Saleh et al., 2022), the impact of any of these flows will remain more pronounced on the endobenthic community in comparison to epibenthic, nektobenthic, and nektonic taxa”

    From Probability-based preservational variations within the early Cambrian Chengjiang biota (China) (2022) · cites this paper as Saleh et al., 2022

    The Results and discussion, under “Taphonomic conditions,” says most animals lived in shallower waters and were transported by flows to the prodelta, an environment favorable for preservation. It does not establish that most flows transported organisms; its “most” qualifies the animals, not the flows. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The impact of any of these flows will remain more pronounced on the endobenthic community in comparison to epibenthic, nektobenthic, and nektonic taxa.

    “However, considering that most flows transported organisms from their habitat to environments favorable for their preservation (Saleh et al., 2022), the impact of any of these flows will remain more pronounced on the endobenthic community in comparison to epibenthic, nektobenthic, and nektonic taxa (regardless of the precise sedimentary sub-environment investigated and the proportion of deposits”
  • Groups containing endobenthic taxa (e.g., Brachiopoda; Priapulida) are the easiest to capture and are the best preserved.

    “Considering that fossils in the Chengjiang biota were also transported by sedimentary flows (Saleh et al., 2022), it is possible to suggest that groups containing endobenthic taxa (e.g., Brachiopoda; Priapulida) are the easiest to capture and are the best preserved (right side of the internal organ sequence; Fig. 1D).”

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Research works printed but not linked: 1

  1. [49]MacEachern JA Raychaudhuri I Pemberton SG Stratigraphic applications of the Glossifungites ichnofacies: delineating discontinuities in the rock record. In Applications of Ichnology to Petroleum Exploration: a Core Workshop, ed. S.G. Pemberton Soc. Sediment. Geol. Core Workshop 1992 17 169 198

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Authors
Saleh, F., Qi, C., Buatois, L. A., Mángano, M. G., Paz, M., Vaucher, R., Zheng, Q., Hou, X.-G., Gabbott, S. E., & Ma, X.
Affiliations
  • Yunnan University (CN)
  • University of Saskatchewan (CA)
  • Simon Fraser University (CA)
  • University of Leicester (GB)
Corresponding author
  • Saleh, Farid
  • Ma, Xiaoya
Venue
Nature Communications
Published
2022-03-23
Volume
13
Issue
1
Pages
1569-1569
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4220838638
Cited by
51
References
86
Citations by year
2026: 7 · 2025: 21 · 2024: 11 · 2023: 7 · 2022: 5
FWCI
8.21
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ResearchOnline at James Cook University (James Cook University) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • National Natural Science Foundation of China (41763002)
  • State Key Laboratory of Palaeobiology and Stratigraphy
  • Natural Sciences and Engineering Research Council of Canada (422931-20, 311727–20, 422931, 311727)
  • Natural Environment Research Council (NE/L011751/2, NE/L011751/1)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Earth-Surface Processes › Geological formations and processes
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
Keywords
Chengjiang biota, deltaic environments, delta front, storm deposits, Cambrian explosion, soft-bodied fossils, sedimentology, salinity change, sedimentation rate, early animal diversification, paleoenvironment
MeSH terms
Animals, Biological Evolution, Fossils, Minerals, Rivers, Floods, Biota

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