华南寒武系地层中广泛富集微体骨骼化石，为解决某些疑难化石的亲缘关系及研究早期后生动物的演化提供了重要化石证据。在贵州剑河八郎“清虚洞组”中发现一些管状微体骨骼化石。经鉴定后主要有4属，分别为小钻孔螺 Torellella、似软舌螺 Hyolithellus、鞘状螺Coleoloides和表面具鳞片状管状化石 Mongolitubulus squa-mifer。Mongolitubulus分布范围较为广泛，本文结合前人对该化石亲缘关系的探讨及剑河寒武系“清虚洞组”化石的特征，推测 M．squamifer可能是高肌虫的装饰刺。

Diverse early Cambrian skeletal microfossils have been discovered from South China, which has provided an excellent evidence for solving the affinity of some problematic microfossils and understanding the evolution of early Cambrian metazoan. Recently, we found some tubular skeletal microfossils from the "Tsinghsutung Formation" in Jianhe, Guizhou Province, which belong to Torellella, Hyolithellus, Coleoloides and scaly ornament tubular microfossils Mongolitubulus squamifer. M. squamifer has a wide distribution. We assumed that M. squamifer might be the carapace spines of the Bradoriida crustaceans based on the features of microfossils from "Tsinghsutung Formation" in comparing with the variety of Mongolitubulus described in the literature.

国家自然科学基金(41772021，41330101)；贵州省科技计划项目(黔科合平台人才[2017]5788号)；中国科学院战略性先导科技专项(B类)(XDB26010103)；现代古生物学和地层学国家重点实验室基金(153113)联合资助