The Hongguleleng Formation, the highest and most important Devonian marine carbonate horizon in western Junggar, contains an endemic shallow-water Icriodus–Polygnathus conodont fauna with rare palmatolepids and other genera. The conodont faunas from the Bulongguoer and the Wulankeshun sections are similar, with high abundance (about 40%) of endemic taxa (13 taxa), indicating isolation of the Junggar Basin during early Famennian. Non-endemic species in the faunas suggest that the Lower Member of the Hongguleleng Formation is assignable to the Pa. rhomboidea Zone to the Pa. marginifera marginifera Zone of early Famennian, not including the Frasnian–Famennian boundary. The Upper Member may be of late Famennian–early Tournaisian in age on the basis of our preliminary faunal analysis.

红谷冷岭组是准噶尔西部最高、最重要的泥盆纪海相碳酸盐岩层位，包含特有的浅水Icriodus - Polygnathus牙形石动物群，具有稀有的掌叶动物和其他属。布隆果尔和乌兰克顺剖面牙形石动物群相似，特有类群（13个）丰度高（约40%），表明准噶尔盆地早在法门世就与世隔绝。动物群中的非特有物种表明红谷冷组下段可归属于Pa。菱形区到霸。边鹧鸪菜早法门阶带，不包括弗拉斯-法门阶边界。根据我们的初步动物区系分析，上层成员的年龄可能是晚法门阶 - 早图尔奈阶。