Eggshell fragments (IMAGE) University of Cambridge Caption Eggshell fragments from an ancient nest in South Australia. The mass of eggshell collected within one metre squared is equivalent to around 12 whole eggs. Credit Gifford H. Miller Usage Restrictions Please credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.