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Scientists discover dinosaur-era bird fossil with unlaid egg(1/5)

2019-03-28 15:45:29 Ecns.cn Editor :Li Yan

$A fossilized bird dating back about 110 million years is discovered in Yumen, Northwest China\'s Gansu Province. (Photo/China News Service.com)$

A fossilized bird dating back about 110 million years is discovered in Yumen, Northwest China's Gansu Province. (Photo/China News Service.com)

This photo shows the dinosaur-era bird fossil with an unlaid egg. (Provided by the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences)

$A fossilized bird dating back about 110 million years is discovered in Yumen, Northwest China\'s Gansu Province. (Photo/China News Service.com)$

A fossilized bird dating back about 110 million years is discovered in Yumen, Northwest China's Gansu Province. (Photo/China News Service.com)

$A fossilized bird dating back about 110 million years is discovered in Yumen, Northwest China\'s Gansu Province. (Photo/China News Service.com)$

A fossilized bird dating back about 110 million years is discovered in Yumen, Northwest China's Gansu Province. (Photo/China News Service.com)

Artistic reconstruction of the dinosaur-era birds and their living environment. (Provided by the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences)