贵州关岭动物群时代的牙形石地层证据
孙作玉, 郝维城, 江大勇
Conodont Stratigraphic Evidence for the Age of the Guanling Fauna, Guizhou Province, China
SUN Zuoyu,HAO Weicheng,JIANG Dayong
北京大学学报(自然科学版) . 2003, (1): 118 -125 .