Abstract
The recent discovery of a pterosaur egg with embryonic skeleton and soft tissues from the Yixian Formation confirmed that the flying pterosaurs were oviparous1. Here we describe another pterosaur egg whose exquisite preservation indicates that the shell structure was soft and leathery.
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Ji, Q., Ji, SA., Cheng, YN. et al. Pterosaur egg with a leathery shell. Nature 432, 572 (2004). https://doi.org/10.1038/432572a
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DOI: https://doi.org/10.1038/432572a
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