New paper on ptero eggs Grellet-Tinner, Gerald, Wroe, Stephen, Thompson, Michael B. and Ji, Qiang(2007)'A note on pterosaur nesting behavior',Historical Biology,19:4,273 â 277 Assuming they were archosaur eggs, yes, the eggs would probably have to be buried. But if not archosaurs, the possibilities expand. -- David Peters davidrpeters@charter.net