Yuanchuavis kompsosoura

Yuanchuavis kompsosoura is a newly identified species of enantiornithine bird, which was discovered by a group of paleontologists in China. Enantiornithines are the most successful group of Mesozoic birds. They are known only from the Cretaceous period, through fossils discovered in Asia.
The new species is a member of the Pengornithidae family. It lived some 120 million years ago in northeastern China. Its size is equivalent to that of blue jay but its tail is more than 150 per cent of the total length of the body. It had long feathers dominated by the central spine called the rachis.


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