hohles Karbonatfragment (IMAGE) Johannes Gutenberg Universitaet Mainz Caption Hohles Karbonatfragment, möglicherweise von der Speiche eines hölzernen Mühlrads in der Anlage von Barbegal Credit Foto/©: Philippe Leveau Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.