HyperDic: sinornis

English > 1 sense of the word Sinornis:
NOUNanimalSinornissparrow-sized fossil bird of the Jurassic period to the Cretaceous period having a keeled breastbone and vestigial tail
English > Sinornis: 1 sense > noun 1, animal
Meaningsparrow-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.
Member ofgenus SinornisA genus of fossil birds
Broaderbirdwarm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

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