SEM of fossil cell coverings (IMAGE) University of California - Riverside Caption High-resolution scanning electron microscope images of fossil cell coverings of nannoplankton highlighting holes that would have allowed flagella and haptonema to emerge from the cell and draw in food particles. Credit Paul Brown/University College London 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.