Giant File Clam Comparison (IMAGE) Canadian Museum of Nature Caption Dr. Jean-Marc Gagnon compares the new species of giant file clam (Acesta crytodelphe, left) to a regular-sized file clam. Credit Laura Sutin © Canadian Museum of Nature Usage Restrictions For use with stories or reports about the new clam species. 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.