Triassic ammonites,fossil plants and radiolaria occurred in normal sedimentary micritic limestone,detrital rock and silica rock and represented the sediment age of the Bayankelashan Group.

• 其中三叠纪的菊石、古植物、放射虫等标准化石分子产于正常沉积的泥晶灰岩、碎屑岩、硅质岩等岩层中,代表巴颜喀拉山群的沉积时代,且在纵向与横向上控制程度高。