1979年3月30日至4月11日在英国威尔士州首府加的夫城(Cardiff)由国际地科联(IUGS)地层委员会志留纪地层分会和奥陶—志留系界线工作组联合召开了英国志留系野外现场会议。出席这次会议的有12个国家的24名代表。他们均是这两个组织的委员或通讯委员。以穆恩之教授为团长的中国地质古生物学家代表团出席了会议。 From March 30 to April 11, 1979, Cardiff, the capital of the state of Wales in the United Kingdom, was jointly held by the Silurian Stratigraphy Branch of the IUGS Stratigraphic Commission and the Ordovician-Silurian Boundary Working Group British Silurian field scene meeting. Twenty-four delegates from 12 countries attended the meeting. They are both members of the two organizations or communications committee. The delegation of Chinese geologists and biologists led by Professor Muen attended the conference.