Planktic Foraminifera (IMAGE) UiT The Arctic University of Norway Caption Microfossils of single celled organisms record environmental changes of the time in their shells. Credit Erik Thomsen and Tine Rasmussen Usage Restrictions Reuse with credit 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.