During the review of the Ordovician Sections of China and theirrelation to both,the older and younger formations,it has become apparentthat a reclassification of the formations in some of the sections is needed.
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A. W. GRABAU.1939. REVISION OF SOME LOWER PALAEOZOIC SECTIONS OF CENTRAL CHINA[J]. Acta Geologica Sinica(),19(4):
