Mosasaur (IMAGE) Wiley Caption Many scientists have studied fossils from gigantic marine lizards called mosasaurs that lived at the time of the dinosaurs and flourished in ancient seas, but little is known about aspects of their breeding and birth. Investigators have gained new insights from young mosasaur specimens collected over 100 years ago that had previously been thought to belong to ancient marine birds. Their findings are published in Palaeontology. Credit Field, D. J., LeBlanc, A., Gau, A., Behlke, A. D. (2015), Pelagic neonatal fossils support viviparity and precocial life history of Cretaceous mosasaurs. <i>Palaeontology</i>. doi: 10.1111/pala.12165 Usage Restrictions For use with news articles related to the study License Licensed 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.