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首次报道和讨论了桂北恭城中奥陶世笔石地层。该套地层以前划归为寒武系，笔石地层的发现证实为奥陶系，层位大致相当于桂北兴安的黄隘组和升平组。笔石动物群包括对笔石、四笔石、叶笔石、瘤笔石、围笔石等，可以划分为２个笔石带：Ｄｉｄｙｍｏｇｒａｐｔｕｓａｂｎｏｒｍｉｓ带和Ａｍｐｌｅｘｏｇｒａｐｔｕｓｃｏｎｆｅｒｔｕｓ带。恭城笔石动物群的发现为华南区笔石地层的研究提供了新资料，对进一步了解该区大地构造环境、沉积环境及古地理具有重要意义。
The first report and discussion of the Middle Ordovician Petrochy in Gongcheng, Guangxi. This set of strata was previously classified as the Cambrian, and the discovery of the penolith formation was confirmed to be Ordovician. The strata are roughly equivalent to the Huangnai Formation and the Shengping Formation in Xing’an, northern Guangxi. Pen petrified fauna, including the pen, four pen, stone penolith, knob pen stone, Pen pen stone, can be divided into two pen-stone: Didymograptus abnormis band and Amplexograptusconfertus band. The discovery of the Gongcheng Petriferous fauna has provided new information for the study of the Penstone strata in southern China, which is of great significance for further understanding of the tectonic environment, sedimentary environment and palaeogeography in this area.