Palaeontology: pterosaur egg with a leathery shell |
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| Authors: | Ji Qiang Ji Shu-An Cheng Yen-Nien You Hai-Lu Lü Jun-Chang Liu Yong-Qing Yuan Chong-Xi |
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| Institution: | Department of Earth Sciences, Nanjing University, Nanjing 210093, China. |
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| Abstract: | The recent discovery of a pterosaur egg with embryonic skeleton and soft tissues from the Yixian Formation confirmed that the flying pterosaurs were oviparous. Here we describe another pterosaur egg whose exquisite preservation indicates that the shell structure was soft and leathery. |
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