甘肃庆阳地区沿河谷萨拉乌苏组分布普遍，在庆阳附近和环县曲子该组底部砂砾层和上部粘土层中发现了陶片。同一层位产哺乳动物化石，其地质时代属晚更新世。１４Ｃ测年资料也反映它是一套距今约三万年前的堆积，与根据哺乳动物化石所确定的地质年代相一致。这一发现把陶器出现的年代提前了大约２万年，其意义重大 Gansu Qingyang area along the Sara Wusu group distribution is common in the vicinity of Qingyang and Central County Quzi the bottom of the gravel layer and clay layer found in the clay. The same layer produces mammalian fossils, the geological era of Late Pleistocene. The 14C dating data also shows that it is a set of deposits about 30,000 years ago, consistent with the geological age determined by mammalian fossils. This discovery advanced the emergence of pottery about 20,000 years ago, which is of great significance