Where the Spiders Were Discovered (IMAGE) University of Kansas Caption Locality map of the study area. A, distribution of Cretaceous sedimentary basins around the Korean Peninsula; rectangular area is magnified in B. B, simplified geological map of the Gyeongsang Arc System; the sedimentary rocks represent the Gyeongsang Backarc Basin, while the volcanic rocks represent the Gyeongsang Volcanic Arc; rectangular area is magnified in C (modified from Chough & Sohn 2010; the displacement by the Yangsan Fault has been recovered). C, road map of the study area showing the two fossil localities (stars). Credit Paul Selden 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.