Arachnid reconstruction (IMAGE) University of Kansas Caption Reconstruction of the 308-million-year-old arachnid Douglassarachne acanthopoda from the famous Mazon Creek locality. Credit Paul Selden et al 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.