First species of Enantiornithes from Sihedang elucidates skeletal development in Early Cretaceous enantiornithines

@article{Hu2017FirstSO,
  title={First species of Enantiornithes from Sihedang elucidates skeletal development in Early Cretaceous enantiornithines},
  author={Han Hu and Jingmai K. O’Connor},
  journal={Journal of Systematic Palaeontology},
  year={2017},
  volume={15},
  pages={909 - 926}
}
The Sihedang locality of the Lower Cretaceous Yixian Formation is the only recognized ornithuromorph-dominated locality in the Jehol Group of north-eastern China. Here we report on the first enantiornithine from this locality and erect a new taxon Monoenantiornis sihedangia gen. et sp. nov. The holotype and only specimen preserves a rare ontogenetic stage in which the intermedium is ossified but free from the other proximal tarsals and the tibia, consistent with the pattern of ossification that… Expand
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