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A Mesozoic fossil lagerstätte from 250.8 million years ago shows a modern-type marine ecosystem
Dai, X.; Davies, J.H.F.L.; Yuan, Z.; Brayard, A.; Ovtcharova, M.; Xu, G.; Liu, X.; Smith, C.P.A.; Schweitzer, C.E.; Li, M.; Perrot, M.G.; Jiang, S.; Miao, L.; Cao, Y.; Yan, J.; Bail, R.; Wang, F.; Guo, W.; Song, H.; Tian, L.; Dal Corso, J.; Liu, Y.; Chu, D.; Song, H. (2023). A Mesozoic fossil lagerstätte from 250.8 million years ago shows a modern-type marine ecosystem. Science (Wash.) 379(6632): 567–572. https://dx.doi.org/10.1126/science.adf1622
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer
Peer reviewed article  
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  • Dai, X.
  • Davies, J.H.F.L.
  • Yuan, Z.
  • Brayard, A.
  • Ovtcharova, M.
  • Xu, G.
  • Liu, X.
  • Smith, C.P.A.
  • Schweitzer, C.E.
  • Li, M.
  • Perrot, M.G.
  • Jiang, S.
  • Miao, L.
  • Cao, Y.
  • Yan, J.
  • Bail, R.
  • Wang, F.
  • Guo, W.
  • Song, H.
  • Tian, L.
  • Dal Corso, J.
  • Liu, Y.
  • Chu, D.
  • Song, H.
Abstract
    Finely preserved fossil assemblages (lagerstätten) provide crucial insights into evolutionary innovations in deep time. We report an exceptionally preserved Early Triassic fossil assemblage, the Guiyang Biota, from the Daye Formation near Guiyang, South China. High-precision uranium-lead dating shows that the age of the Guiyang Biota is 250.83 +0.07/–0.06 million years ago. This is only 1.08 ± 0.08 million years after the severe Permian-Triassic mass extinction, and this assemblage therefore represents the oldest known Mesozoic lagerstätte found so far. The Guiyang Biota comprises at least 12 classes and 19 orders, including diverse fish fauna and malacostracans, revealing a trophically complex marine ecosystem. Therefore, this assemblage demonstrates the rapid rise of modern-type marine ecosystems after the Permian-Triassic mass extinction.
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