Xinicaulis lignescens from the Upper Devonian of Xinjiang, NW China (image) Cardiff University Share Print E-Mail Caption This is an illustrative transverse plane through the small trunk, showing the three naturally-fractured parts. Credit Xu and Berry, 2017. 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.