<i>Heterohelix globulosa foraminifera</i> (IMAGE) Proceedings of the National Academy of Sciences Caption This is Heterohelix globulosa foraminifera isolated from the K-Pg boundary clay at Geulhemmerberg in the Netherlands, shown at 8x magnification. Credit Michael J. Henehan 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.