Foraminifera (IMAGE) University of Texas at Austin Caption A photomicrograph showing 10 species of foraminifera, a type of plankton. In this paper, researchers examined foraminifera fossils and found a link between the rate of species recovery after an extinction event and evolution. Credit United States Geological Survey/l Randolph Femmer Usage Restrictions Include photo 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.