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A new Middle Jurassic diplodocoid suggests an earlier dispersal and diversification of sauropod dinosaurs

Author

Listed:
  • Xing Xu

    (Chinese Academy of Sciences)

  • Paul Upchurch

    (University College London)

  • Philip D. Mannion

    (South Kensington Campus)

  • Paul M. Barrett

    (Department of Earth Sciences, Natural History Museum)

  • Omar R. Regalado-Fernandez

    (University College London)

  • Jinyou Mo

    (Natural History Museum of Guangxi)

  • Jinfu Ma

    (Lingwu National Geopark Administration)

  • Hongan Liu

    (Lingwu Historic Relic Administration)

Abstract

The fragmentation of the supercontinent Pangaea has been suggested to have had a profound impact on Mesozoic terrestrial vertebrate distributions. One current paradigm is that geographic isolation produced an endemic biota in East Asia during the Jurassic, while simultaneously preventing diplodocoid sauropod dinosaurs and several other tetrapod groups from reaching this region. Here we report the discovery of the earliest diplodocoid, and the first from East Asia, to our knowledge, based on fossil material comprising multiple individuals and most parts of the skeleton of an early Middle Jurassic dicraeosaurid. The new discovery challenges conventional biogeographical ideas, and suggests that dispersal into East Asia occurred much earlier than expected. Moreover, the age of this new taxon indicates that many advanced sauropod lineages originated at least 15 million years earlier than previously realised, achieving a global distribution while Pangaea was still a coherent landmass.

Suggested Citation

  • Xing Xu & Paul Upchurch & Philip D. Mannion & Paul M. Barrett & Omar R. Regalado-Fernandez & Jinyou Mo & Jinfu Ma & Hongan Liu, 2018. "A new Middle Jurassic diplodocoid suggests an earlier dispersal and diversification of sauropod dinosaurs," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05128-1
    DOI: 10.1038/s41467-018-05128-1
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    Cited by:

    1. Paul Rummy & Jessica Thevamalar Rummy, 2021. "Recontextualising the style of naming in nomenclature," Palgrave Communications, Palgrave Macmillan, vol. 8(1), pages 1-6, December.

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