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前言关于滇西寒武纪三叶虫的研究,最早孙云铸(1939)首次在保山蒲缥孔雀寺发现晚寒武世凤山期三叶虫,肯定了滇西晚寒武世地层的存在。其后,1941年黄元宗在保山沙河厂发现长山期三叶虫(王鸿桢,1942)。 60年代初,云南省地质局区测队(1965)、孙云铸、项礼文(1962,1979)发现和报导了更丰富的晚寒武世中、晚期的三叶虫,但一直没有晚寒武世早期三叶虫的报道。
Foreword On the study of the Cambrian trilobites in Western Yunnan, the earliest Sun Yunzhu (1939) discovered the late Cambrian Trilobites in Fengshan at Peacock Monastery in Baoshan, affirmed the existence of Late Cambrian strata in Western Yunnan. Later, in 1941, Huang Yuanzong discovered Changshan trilobite in Baoshan Shahe Factory (Wang Hongzhen, 1942). In the early 1960s, the Yunnan Geological Bureau regional survey team (1965), Sun Yunzhu and Xiang Liwen (1962, 1979) discovered and reported richer Late Triassic trilobites in Late Cambrian, but none of the early Triassic Leafworm reports.