<正> The origin and early evolution of angiosperms is one of the most important topics in the field of botany. During the recent twenty years, the theory on Pre-Cretaceous origin of angiosperms was criticized by Scott et al. (1960),Hughes (1976) and others. Palynological data show that the monosulcate pollen possibly bearing an affinity to angiosperms such as Clavatipollenites first appeared from