Fossil Squat Lobster and Its Parasite (image) University of California - Berkeley Share Print E-Mail Caption The carapace of a reef squat lobster from the Jurassic Period of Austria, 150 million years ago. At the lower left, a swelling in the gill region is caused by an isopod parasite. Scale bar is 1 millimeter. Credit Cristina Robins & Adiel Klompmaker, UC Berkeley Usage Restrictions None Share Print E-Mail 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.