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Smith CPA, Laville T, Fara E, et al. Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian. Sci Rep. 2021;11(1):19657doi: 10.1038/s41598-021-99056-8.
Smith, C. P. A., Laville, T., Fara, E., Escarguel, G., Olivier, N., Vennin, E., Goudemand, N., Bylund, K. G., Jenks, J. F., Stephen, D. A., Hautmann, M., Charbonnier, S., Krumenacker, L. J., & Brayard, A. (2021). Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian. Scientific reports, 11(1), 19657. https://doi.org/10.1038/s41598-021-99056-8
Smith, Christopher P A, et al. "Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian." Scientific reports vol. 11,1 (2021): 19657. doi: https://doi.org/10.1038/s41598-021-99056-8
Smith CPA, Laville T, Fara E, Escarguel G, Olivier N, Vennin E, Goudemand N, Bylund KG, Jenks JF, Stephen DA, Hautmann M, Charbonnier S, Krumenacker LJ, Brayard A. Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian. Sci Rep. 2021 Oct 04;11(1):19657. doi: 10.1038/s41598-021-99056-8. PMID: 34608207; PMCID: PMC8490361.
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Sci Rep. 2021 Oct 04;11(1):19657. doi: 10.1038/s41598-021-99056-8.

Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian.

Scientific reports

Christopher P A Smith, Thomas Laville, Emmanuel Fara, Gilles Escarguel, Nicolas Olivier, Emmanuelle Vennin, Nicolas Goudemand, Kevin G Bylund, James F Jenks, Daniel A Stephen, Michael Hautmann, Sylvain Charbonnier, L J Krumenacker, Arnaud Brayard

Affiliations

  1. Biogéosciences UMR 6282 CNRS, Université Bourgogne Franche-Comté, 21000, Dijon, France. [email protected].
  2. Muséum National d'Histoire Naturelle, CR2P, UMR 7207, CNRS, Sorbonne Université, 75005, Paris, France.
  3. Biogéosciences UMR 6282 CNRS, Université Bourgogne Franche-Comté, 21000, Dijon, France.
  4. LEHNA UMR 5023, CNRS, ENTPE, Univ Lyon, Université Claude Bernard Lyon 1, 69622, Villeurbanne, France.
  5. LMV, Université Clermont Auvergne, CNRS, IRD, 63000, Clermont-Ferrand, France.
  6. IGFL UMR 5242, CNRS, ENS de Lyon, Université Claude Bernard Lyon 1, 69364, Lyon, France.
  7. , Spanish Fork, USA.
  8. , West Jordan, USA.
  9. Department of Earth Science, Utah Valley University, Orem, UT, 84058, USA.
  10. Paläontologisches Institut und Museum, Universität Zürich, 8006, Zürich, Switzerland.
  11. Department of Geosciences, Idaho State University, Pocatello, ID, 83209-8072, USA.

PMID: 34608207 PMCID: PMC8490361 DOI: 10.1038/s41598-021-99056-8

Abstract

The mass extinction characterizing the Permian/Triassic boundary (PTB; ~ 252 Ma) corresponds to a major faunal shift between the Palaeozoic and the Modern evolutionary fauna. The temporal, spatial, environmental, and ecological dynamics of the associated biotic recovery remain highly debated, partly due to the scarce, or poorly-known, Early Triassic fossil record. Recently, an exceptionally complex ecosystem dated from immediately after the Smithian/Spathian boundary (~ 3 myr after the PTB) was reported: the Paris Biota (Idaho, USA). However, the spatiotemporal representativeness of this unique assemblage remained questionable as it was hitherto only reported from a single site. Here we describe three new exceptionally diverse assemblages of the same age as the Paris Biota, and a fourth younger one. They are located in Idaho and Nevada, and are taxonomic subsets of the Paris Biota. We show that the latter covered a region-wide area and persisted at least partially throughout the Spathian. The presence of a well-established marine fauna such as the Paris Biota, as soon as the early Spathian, indicates that the post-PTB biotic recovery and the installation of complex ecosystems probably took place earlier than often assumed, at least at a regional scale.

© 2021. The Author(s).

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