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1下泥盆统大南湖组在大南湖组西部被上泥盆统康古尔塔格组(D3kg)不整合覆盖,与其它地层呈断层接触。该地层中含有腕足和珊瑚类化石。如:薄扭贝Leptoslrophia sp.,无洞贝Atrypa sp.,郝韦尔石燕Howellella sp.等。属早泥盆世中晚期代表化石。本次调查采集到动物和植物化石,动物化石经鉴定有腕足类、腹足类和双壳类。腕足类有Stegerhynchus wutubulakensis(乌土布拉克盖嘴贝)、Leptostrophia striata(细线薄扭贝)、Leptostrophia rotunda(圆形薄扭贝)、Uchtospirifer yengisarensis Wang(英吉沙乌贺
1 The Lower Devonian Da Nanhu Formation is unconformably covered by the Upper Devonian Kanggutage Formation (D3kg) in the western part of the Dainannan Formation and is in fault contact with other strata. The stratum contains brachiopods and coral fossils. Such as: Leptoslrophia sp., Atrypa sp., Howelllla sp. It belongs to the middle-late Early Devonian fossils. The survey collected animals and plant fossils, animal fossils identified by Brachiopods, gastropods and bivalves. Brachiopods include Stegerhynchus wutubulakensis, Leptostrophia striata, Leptostrophia rotunda, Uchtospirifer yengisarensis Wang,