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Sinornis

DEFINITIONS OF: Sinornis

1

n 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

Type of:
bird
warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
WORD FAMILY
USAGE EXAMPLES