#genus_Sinornis  a genus of fossil birds
  supertype:  #bird_genus  a genus of birds
  member of:  #subclass_Archaeornithes
  member:  #Sinornis  sparrow-sized fossil bird of the Upper Jurassic to Lower Cretaceous having a keeled breastbone and vestigial tail; found in China; considered possibly the second most primitive of all birds

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