<i>Nectocaris pteryx</i> (IMAGE) University of Toronto Caption This is a Nectocaris pteryx from the Middle Cambrian Burgess Shale. Credit Jean-Bernard Caron Usage Restrictions None 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.