Over 200 three-dimensionally preserved eggs of pterosaurs unearthed

A staff member works on a fossil sample, Nov. 28, 2017. Over 200 three-dimensionally preserved eggs of pterosaurs have been unearthed in China, providing new insight into the life history of the rulers of the skies in the age of dinosaurs, scientists said Thursday. The findings on the pterosaur species, known as Hamipterus tianshanensis, were published in the U.S. journal Science. (Xinhua/Jin Liwang)