一、引言 关于大隆组的层位,曾有两种意见。第一种认为大隆组与长兴组相当,二者系同期异相沉积,含有不同的生物群。第二种认为大隆组在长兴组之上,代表我国南部上二叠统最高的层位。1964年出现了第三种意见,即“大隆组和长兴组既非相变,又非位于长兴组之上,而是位居长兴组之下,中间还隔一王潘里含煤的岩段(包括“狮子山段”在内)”,提 I. INTRODUCTION There have been two opinions on the horizon of the Dalong Formation. The first one is that the Dalong Formation is similar to the Changxing Formation, both of which are deposited in different phases in the same period and contain different biota. The second is that the Dalong Formation is above Changxing Formation and represents the highest level of Upper Permian in southern China. A third opinion emerged in 1964 that “the Dalong and Changxing formations neither transformed nor located above the Changxing Formation, but are beneath the Changxing Formation with interbedded rocks Paragraph (including ”Lion Rock“ included) ”mention