中文摘要：

贵州寒武系九门冲组和渣拉沟组中的海绵骨针化石经室内醋酸浸泡处理后获得,主要由有次级分枝的单轴针、具刺二轴四射针、三轴五射针、斜五射三轴针和三轴六射针组成,分属普通海绵和六射海绵类。其分异度明显低于陕西省镇坪县筇竹寺组、镇巴县灯影组西蒿坪段和水井沱组的海绵骨针组合,特别是镇巴地区灯影组西蒿坪段和水井沱组的普通海绵纲骨针化石类型如正多射骨针（orthopolyactines）、正顶多叉杆式骨针（orthopolyaenes）及顶三叉杆式骨针（triaenes）等类型在贵州深水区的九门冲组和渣拉沟组中均未发现。这些差异可能是由于当时贵州丹寨、三都地区的水体较深导致。

英文摘要：

Sponge spicules from the deep water facies Jiumenchong and Zhalagou formations of the early Cambrian of Guizhou are mainly consisted of monaxons with subradiates,acanthostauractines,acerose hexactines,acerose acanthohexactines,acerose acanthohexactines,stubby hexactines,pentactines,and clinopentactines. Except for the mona-xons spicules that belong to demosponge,all the other spicule types belong to the hexactinellid. The diversity and abundance are significantly lower than those of the Qiongzhusi Formation of Zhenping and the Xihaoping Member （of the upper part of Dengying Formation） and Shuijingtuo Formation of Zhenba,Shaanxi. Furthermore,demosponge spicules such as orthopolyactines,orthopolyaenes,triaenes and other types found in the Zhenba region belonging to shallow-water facies and are not found in the deeper water facies of the Jiumenchong and Zhalagou formations of Guizhou. It may be indicated that compositions of sponge spicules assemblages are controlled by water depth.