MEI Shi - long , 1991 . Middle and Late Cambrian conodont and trilobite biostratigraphy in Wanxian, Hebei . Unpublished Ph. D thesis of Peking University.武桂春, 2003. 鲁西地区晚寒武世牙形石. 北京大学博士研究生学位论文....

biostratigraphy的音标：biostratigraphy的英式发音音标为：[bi:əʊst'ræti:ɡrəfɪ]biostratigraphy的美式发音音标为：[bioʊst'rætiɡrəfɪ]...

n.生物地层学...