被子植物在早白垩世的起源和辐射演化是地球科学研究的热点之一。地处我国西北内陆的甘肃酒泉盆地发育长序列下白垩统湖相沉积(图1),被古生物学界作为广义热河生物群的代表地区之一。兰州油气资源研究中心张明震博士等通过对酒泉盆地南缘旱峡剖面下白垩统详细的孢粉学研究,发现多个典型早期被子植物花粉类 The origins and radiation evolution of angiosperms in the Early Cretaceous are one of the hot topics in earth science research. The long sequence Lower Cretaceous lacustrine facies is located in the Jiuquan basin, located in the inland of northwestern China (Figure 1). Paleontology is one of the representative areas of the Geothermal Rehe biota. Based on the detailed palynological study of Cretaceous under the arid gorge profile in the southern margin of the Jiuquan Basin, Dr. Zhang Mingzhen from Lanzhou Oil and Gas Resources Research Center found that many typical early angiosperm pollens