genus sinornis

Noun
  1. A genus of fossil birds (synset 101519128)
    is a type of: bird genus - a genus of birds
    member holonym: sinornis - 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
    belongs to: archaeornithes, subclass archaeornithes - primitive reptile-like fossil birds of the Jurassic or early Cretaceous

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