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*
陈智敏, 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
桂林颅形贝( Cranaena guilinensis sp.nov.)壳体表面彩色纹饰复原(主要依据标本PKUM02-0631和PKUM02-0635) a—腹视;b—侧视;c—背视