Fossil bryozoans 2 (IMAGE) University of Colorado at Boulder Caption Fossil bryozoan colony as seen under the microscope. Each of the oval shapes was once an individual zooid. Credit Sarah Leventhal Usage Restrictions Use with credit only License Original 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.