本文所谓的寒武纪介形类,就是寒武纪的高肌虫目(Bradoricopida)。但是,不少人认为这不是介形类,而是与介形虫亚纲平行的另外的大类,叫做介甲类(Conchostraca);或者叫做古甲亚纲(Archaeostraca)。这后一观点,迄今仍盛行于澳大利亚和我国古生物界。笔者在参加编制西南化石图册中感到,无法沿用现行分类系统,不得不先就高肌虫的分类位置进行讨论,这是要写本文的一个原因;至于高肌虫目的归属问题和介形类的起源问题的 The so-called Cambrian tectonic class, is the Cambronidae of the order of the order of the order (Bradoricopida). However, many people think that this is not an orthodox category, but rather an additional broad category that is parallel to the ostracoderm, called Conchostraca; or Archaeostraca. This latter viewpoint, so far prevailed in Australia and our paleontology community. I participated in the preparation of the Southwest Fossil Atlas felt that the current classification system can not be used, had to first discuss the classification of high muscle worms, which is to write this article a reason; The origin of the problem