摘要
The Late Miocene Bangmai Formation flora from Zhongzhai Town in the Lincang Municipality of Yunnan Province, Southwest China is made up mainly of fossil leaves. It comprises 37 families, 59 genera and 71 species (including 37 new species) in total. The palaeoflora represents a mixed evergreen and deciduous broad-leaved forest, indicating a slightly humid subtropical climate. The evidence from the fossil plants indicates that the uplifted altitude of the Tibetan Plateau had reached enough height to obstruct the moist Indian ocean atmospheric circulation which resulted in a monsoon climate formation in South and Southeast Asia. The Bangmai flora is the Late Miocene in age, about later than 11.6 Ma.