Hirnantian Branchiopods (IMAGE) Syracuse University Caption Detail images of fossils from the Ordovician Period outcrop on Anticosti Island, Quebec, Canada. Credit Photo credit: André Desrochers, University of Ottawa Usage Restrictions None 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.