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Nature. 2004 Dec 2;432(7017):572.

Palaeontology: pterosaur egg with a leathery shell.

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  • 1Department of Earth Sciences, Nanjing University, Nanjing 210093, China.

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.

PMID:
15577900
[PubMed - indexed for MEDLINE]
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