重点介绍产于我国扬子地台下寒武统底部含磷岩系中的部分具棘，带刺类化石的分布情况和埋藏特征，对它们的分类位置和亲缘关系也作初步探讨，认为它们分属于不同的后生动物类群的硬件构造，文中描述了该类化石3属4种，其中1新属1新种－Paradoxiconus typicalis gen.et sp.nov。

This paper mainly deals with several kinds of peculiar metazoan fossil remains, which were collected from the basal Cambrian phosphoric rock series of both Yangtze and Tarim platforms, China. They were artificially taken as helmet like fossils by their appearance, since they are usually low cone like with apex curved downward, and are somewhat similar to ancient helmets. Three genera and 4 species are described, including 1 new genus and 1 new species; and their distributions, preservation and affinities are briefly discussed. Based on their features, the authors deduce that they should represent outer hardparts of various metazoans.

Q915.81 Q915.6

国家重点基础研究发展规划项目 (G2 0 0 0 0 7770 0 )，国家攀登计划专项 (攀 95 专 0 1)成果