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Sinornis is a genus of enantiornithine birds. Several referred fossils were recovered from the Jiufotang Formation at Liaoning, People's Republic of China. The Jiufotang overlays the Yixian, which suggests an Aptian or Albian age (between 100-120 MYA), according to Swisher et al. (1999). It is mentioned in The Complete Guide To Prehistoric Life in Iberomesornis entry.
Sinornis is known only from the type species, Sinornis santensis.