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一、前言我院三迭纪科研组在测制川西北上三迭统剖面时,于江油县马鞍塘、安县濉水、绵竹县汉旺等处采得一些苔藓虫化石。这是我国继西藏珠穆朗玛峰报导之后,又一处发现
I. INTRODUCTION Triassic research group in our institute took some bryozoan fossils from Maantang in Jiangyou County, Huangshui in Anxian County and Hanwang in Mianzhu County when measuring the profile of Upper Triassic in northwestern Sichuan. This is another discovery after our coverage of Everest in Tibet