in Hubei Sheng Dizhi Kexue Yanjiusuo et al. [Hubei Province Institute of Geologyet al. ], Zhongnan diqu gushengwu tuce. 2. Wan gusheng dai bufen. [Fossils of central and southern China. Vol. 2. Late Palaeozoic. ] Dizhi Chuba e [Geological Press], Beijing:
