An expert works during a dinosaur footprints preservation at a geological park in Yanqing of Beijing, capital of China, May 24, 2018. Experts from China and Greece have recently started their first joint preservation work on more than 170 fossilized dinosaur footprints discovered in a suburb of Beijing. (Xinhua/Li Ran)
Experts preserve dinosaur footprints in Beijing
Source: Xinhua| 2018-05-25 19:41:42|Editor: ZD
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