具彩色斑纹颅形贝在广西桂林下石炭统黄金组中的发现:兼论颅形贝属的地质地理分布*
, 孙元林 Discovery of color patterned Cranaena(Brachiopoda)from the Lower Carboniferous Huangjin Formation in Guilin of Guangxi with a brief comment on its geological and geographic distribution
Chen Zhimin, Sun Yuanlin
, Sun Yuanlin 