本书分为前言、各(相)区地层剖面描述、化石系统描述。通过前言概略介绍本书研究撰写的基本分工情况。为使化石产地层位的统一性,涉及二叠纪地层划分,其地层系统按三分二叠系的概念(已注明不代表全体著者对二叠系的划分观点)也作了简略介绍。本书的主体部分为化石系统描述,共分为四个门类,即1.类,共研究41属,341种,其中新 The book is divided into preface, the description of stratigraphic section of each (facies) area, fossil system description. Introduce the basic outline of the book by the introduction of the basic situation of division of labor. In order to make the fossil formation stratigraphic unity, involving the Permian stratigraphic division, its stratigraphic system is also briefly introduced according to the concept of the Triassic (not shown on behalf of all authors to divide the Permian). The main part of the book for the fossil system description, is divided into four categories, namely 1. Class, a total of 41 genera and 341 species, of which the new