云南临沧晚中新世邦卖组植物群  

THE LATE MIOCENE BANGMAI FLORA FROM LINCANG COUNTY OF YUNNAN,SOUTHWESTERN CHINA

作　　者：郭双兴[1,2,3] 

机构地区：[1]中国科学院南京地质古生物研究所,古植物学和孢粉学研究室,南京210008 [2]中国科学院生物多样性与生物地理学重点实验室,中国科学院昆明植物研究所,昆明650204 [3]中国科学院西双版纳热带植物园,云南勐腊666303

出　　处：《古生物学报》2011年第3期353-408,共56页Acta Palaeontologica Sinica

基　　金：国家自然科学基金重点项目(41030212)资助

摘　　要：云南临沧中寨晚中新世邦卖组植物群总计37科59属71种(含37新种)。其中,蕨类植物仅有1科1属1种(新种);裸子植物有2科2属2种;被子植物有34科55属67种[其中双子叶植物32科53属65种(含35新种)和单子叶植物2科2属2种];另有分类位置不明的果实1属1种(新种)。这个植物群属于常绿和落叶阔叶混交林植被,它反映稍湿润亚热带气候。化石植物群的特征显示当时青藏高原抬升的高度已经能够阻止印度洋暖湿大气环流的北进,南亚和东南亚一带季风气候已经形成,当时明显的季节性干湿更迭现象已经存在。邦卖组植物化石层的地质年代属于晚中新世,约晚于11.6 Ma。The late Miocene Bangmai Formation flora from Zhongzhai Town in the Lincang Municipality of Yunnan,southwestern China is made up mainly of fossil leaves.It comprises 37 families,59 genera and 71 species（including 37 new species） in total.Amongst them,pteridophyte includes one family one genus and one species（new species）.There are two families two genera and two species of gymnosperms.Others are all angiosperms which include 67 species attributing to 55 genera and 34 families.In them there are 32 families 53 genera 65 species（including 35 new species）of dicotyledons and 2 species allocating to 2 genera within 2 families of monocotyledons.In addition to the leaf flora,there is one species of fossil fruit Carpolithes orbitopterus sp.nov.of uncertain affinity.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.A dry and moist alternation of seasonal climate has already existed since then.The Bangmai flora is the late Miocene in age,about later than 11.6 Ma.

关 键 词：古植物群 晚中新世 季风气候 古生态 云南临沧 中国西南 

分 类 号：Q914[天文地球—古生物学与地层学]