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一、前言 苏南、浙北、皖南地区的志留系与泥盆系的分界问题,实质上是讨论坟头群与茅山群(或唐家坞群)的时代归属问题。 坟头群是潘江(1956)从原“高家边页岩”内划分出来的,当时考虑到其中所含的王冠虫、“始石燕”等化石,可与三峡地区的罗惹坪组、纱帽组对比,而定为中、上志留统。后来,顾知微(1956)根据Orthonota perlata列为中志留统。穆恩之(1962)在总结《中国的志留系》
I. Preface The demarcation between the Silurian and Devonian in southern Jiangsu, northern Zhejiang and southern Anhui essentially discussed the ownership of the times between the graves group and the Maoshan Group (or Tangjiawu Group). The grave group was Pan Jiang (1956), which was divided from the original Gaojiaian Shale. At that time, considering the crown beetles and Shiashiyan among other fossils, it could be used with the Luojialing group, Group contrast, and as, in mind the retention system. Later, Gu Zhwei (1956) was listed as Middle Eastern under Orthonota perlata. Muhn’s (1962) concludes that “China’s Silurian”