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随着近年来对二叠与三叠纪古生物演化的深入研究,发现了这两个纪的生物混生现象和过渡性层位,以致地质、古生物工作者对二叠、三叠系或古生界与中生界的界限划分引起了极大的注意,发表了不少文章。长期以来,二叠系与三叠系的接触关系,多认为是平行不整合接触,其论点的主要依据是:①.在中国南部二叠系与三叠系的界线上,发生了极为明显的生物更替现象,海生无脊椎动物中的(虫筳)类、四射珊瑚、棱菊石类以及三叶虫等都在晚二叠世末期绝灭,而从
With the deep research on the evolution of Permian and Triassic paleontology in recent years, the phenomenon of intergrowth and transitional horizon of these two disciplines has been discovered. As a result, geologic and paleontologists have found that Permian, Triassic or Paleozoic Boundaries with the Mesozoic caused great attention, published a lot of articles. For a long time, the relationship between Permian and Triassic was mostly regarded as parallel unconformity. The main basis of their argument is: ① On the boundary of Permian and Triassic in southern China, Biotransformation phenomenon, marine invertebrates (insects) species, coral coral, pyrrole and trilobite et al in the Late Permian extinction, and from