Yi qi belongs the group of carnivorous dinosaurs known as the therapods - which includes Tyranosaurus rex and velociraptor.

奇翼龙属于霸王龙和迅猛龙所在的一种名为兽脚亚目食肉恐龙的类群中。

These dinosaurs are thought to have been the ancestors of modern birds.

这一类群被认为是现代鸟类的祖先。

But unlike modern birds, Yi qi was found to have a strange extra bone extending backwards from its wrist, rather like an entirely separate group of animals that learned to fly - the bats.

但与现代的鸟类不同，奇翼龙腕部有一个棒状长骨。类似的结构从来没有在其他恐龙中发现过，但在一些会飞的四足动物比如蝙蝠身上发现过。

Professor Xing Xu, one of the world’s leading prolific palaeontologists at the Chinese Academy of Sciences in Beijing and who led the work, said: 'This is really something for me. It is the most unexpected discovery I ever made.

中国科学院古脊椎与古人类研究所古生动物学家徐星教授说：“这次发现对我很重要，是最出乎我意料的一项发现。

'Birds are descended from dinosaurs, but how exactly the transition occurred is not really clear. This new discovery is a new species of these bird like dinosaurs.

“鸟类是由恐龙进化而来的，但是具体的转变过程如何至今仍不清楚。

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