Arthropods (image) University of Adelaide Caption A living arthropod (centipede Cormocephalus) crawls over its 515-million-year-old relative which lived during the Cambrian explosion (trilobite Estaingia). A study of arthropods reveals that their anatomy and genes evolved five times faster during evolution's Big Bang, compared to all subsequent periods -- fast, but totally compatible with Darwin's theory. Both the centipede and trilobite are found on what is now Kangaroo Island, Australia. Credit Michael Lee Usage Restrictions None 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.