本文从古地理、沉积特征与古生物地理区系的观点出发,分别对中国早、中侏罗世、晚侏罗世、早自垩世和晚白垩世的地层区划进行了探讨;在化右群序列和上述讨论的基础上,对中国这一时代的地层进行了划分与对比,还提出了每一个地层分区或小区有代表性的地层建组命名的意见. Based on the paleogeography, sedimentary characteristics and paleontology, this paper discusses the stratigraphic division of the Early, Middle Jurassic, Late Jurassic, Early Cretaceous and Late Cretaceous in China. Based on the above sequence and the above discussion, the stratigraphy in this era of China was divided and compared, and the opinion of formation grouping representative of each stratigraphic subdivision or plot was put forward.