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Paleobiota of the Yixian Formation

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Through China and Fossil

The Yixian Formation is divided into the following subunits: (ages from Zhong et al., 2021 unless otherwise noted)

  • Upper Yixian (124.1 Ma) ("Jingangshan Bed") ("Dawangzhangzi Bed")
  • Upper Lava Unit
  • Jianshangou Unit (125.46 Ma)
  • Lower Lava Unit
  • Lujiatun Unit (125.76–125.68 Ma)

Sauropods

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