We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePalaeontology: pterosaur egg with a leathery shell.AuthorsJi Q; Ji SA; Cheng YN; You HL; Lü JC; Liu YQ; Yuan CXPublicationNature, 2004, Vol 432, Issue 7017, p572ISSN1476-4687Publication typearticleDOI10.1038/432572a