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地矿部岩溶地质研究所构造组,最近在桂林岩溶区中的一套底部含中、上泥盆统和下石炭统灰岩角砾岩的红色钙泥质岩中,发现了丰富的轮藻化石。经地矿部第十二普查勘探大队张捷芳鉴定,计有6属8种,主要属种有:Atopochara sp.,Charites sp.,Mesocharasp.,Obtusochara of.culmina等。Atopochara属分布普遍,均已硅化,可与广东白垩纪地层中一套硅化的Atopochara轮藻化石群对比。该属在国内外已知分布时代为白垩纪;
Recently, in the karst area of Guilin, a series of red calcareous rocks with middle, upper Devonian and Lower Carboniferous limestone breccia have been found in the recent karst area of Guilin, . According to the identification of Zhang Jiefang by the twelfth general survey team of the Ministry of Geology and Mineral Resources, there are 6 genera and 8 species belonging to the genus Atopochara sp., Charites sp., Mesocharasp., Obtusochara of.culmina and so on. Atopochara genera are widespread and have been silicified, comparable to a set of silicified Atopochara chaetocerosids in the Cretaceous of Guangdong. The genus is known at home and abroad for the Cretaceous age distribution;