Discovery of dinoflagellates from the Dengshan Group in NE Jiangxi Province and its significance

From the stratotype section of the Bazhukeng Formation, Dengshan Group (for merly assigned to the late Proterozoic), situated at Dengshan Village, Zhuj ia, Yiyang County, Jiangxi Province, three dinoflagellate-bearing horizons have been found, in which the lower two contain ?Conochitina sp. and Cyatho chitina sp., while the upper yields ?Conochitina sp. and ?Rhabdochitina sp. , which testifies that the stratigraphic units concerned belong to the earl y Paleozoic in age. Such a discovery is significant for re-ascertaining the age of the '"Banxi Group" in South China, and the tectontc namework and it s evolution.