Sinornis


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Noun1.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
bird - warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
genus Sinornis - a genus of fossil birds
References in periodicals archive ?
Retrospective permission to use the figures of Herrerasaurus (Sereno and Novas, 1992) and Sinornis (Sereno and Rao, 1992) has now been given.
Sinornis (Sereno and Rao 1992) and Cathayornis (Zhou et al.
Although the early radiation of birds is still poorly known, forms such as Sinornis (Sereno and Rao 1992) and Iberomesornis (Sanz and Bonaparte 1992) had much shorter tail skeletons with a pygostyle.