sinornis

Noun
  1. Sparrow-sized fossil bird of the Jurassic period to the Cretaceous period having a keeled breastbone and vestigial tail;
    Found in China;
    Considered possibly the second most primitive of all birds (synset 101519250)
    is a type of: bird - warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
    belongs to: genus sinornis - a genus of fossil birds

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