1. School of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Qixia District, Nanjing 210023, People’s Republic of China
2. Chengdu Center of China Geological Survey, No. 2, N-3 Section, First Ring Road, Chengdu 610081, People’s Republic of China
3. Department of Palaeontology, University of Vienna, Geozentrum UZA 2, Althanstrasse 14, 1090 Vienna, Austria,
4. School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK,
5. Earth Sciences Department, Natural History Museum, Cromwell Road, London SW7 5BD, UK,