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一、绪言地质学家对于西面区红层时代的划分和地层对比的意见,分歧很大。特别是对于云南的红层所谓禄丰统的时代,有的把它作为二迭三迭纪,有的把它作为三迭纪,有的把它作为侏罗纪或白堊纪源?938年卞美年在禄丰红层中发现恐龙化石之后,杨钟健研究这些恐龙认为是上三迭纪的化石。卞美年因此把禄丰地区的红层分为两部,下部称
I. INTRODUCTION Geologists have different opinions on the division of stratum of red beds in the western region and stratigraphic contrast. Especially for the era of the so-called Lufeng system of the red layer in Yunnan, some regarded it as Triassic, some as Triassic, and some as Jurassic or Cretaceous sources After Bian Mei-nian discovered the dinosaur fossils in the Lufeng red layer, Yang Zhongjian studied these dinosaurs as fossils of the Upper Triassic. Bian Meinian therefore divides the red layer of the Lufeng area into two parts, the lower part said