Shaanxilithes (image) Vanderbilt University Share Print E-Mail Caption Shaanxilithes are odd, annulated and ribbon-like fossils that start showing up near the end of the Edicaran period. In this fossil they are wrapped around Aspidelia holdfasts. Credit Simon Darroch, Vanderbilt University 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.