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关山生物群(寒武系第二统第四阶)是中国继澄江动物群和凯里动物群之后又一个大量保存软躯体特异化石的寒武纪重要的布尔吉斯页岩型生物群.本文系统概述了云南东部关山生物群形成的沉积学、埋藏学背景以及化石群组成.最新的化石发掘和研究表明,关山生物群共有60余种化石,归属10个大类;其中叶足类、类水母化石、具撑肢的软舌螺类和绿藻等属于首次报道.软躯体化石,尤其是壳体化石如三叶虫和腕足动物中大量软体的保存使得关山生物群成为探讨寒武纪大爆发期间动物演化和特异保存的另一个重要窗口.
The Guanshan biota (the fourth order of the Cambrian second system) is another important Cambrian shale-type biota in the Cambrian after the Chengjiang fauna and the Carey fauna in China. The system provides an overview of the sedimentology, burial science background and fossil assemblage of the Guanshan biota in eastern Yunnan.The latest fossil discoveries and studies show that there are more than 60 fossils in the Guanshan biota, which belong to 10 major categories. Among them, The first such reports are the jellyfish fossils, the soft-shelled gooses, the green algae, etc. The preservation of a large number of soft fossils, especially shell fossils such as trilobites and brachiopods, Another important window for the evolution and preservation of animals during the Great Burst.