Leaf fossils of Sabalites(Arecaceae)from the Oligocene of northern Vietnam and their paleoclimatic implications  

作　　者：Ai Song Jia Liu Shui-Qing Liang Truong Van Do Hung Ba Nguyen Wei-Yu-Dong Deng Lin-Bo Jia Cedric Del Rio Gaurav Srivastava Zhuo Feng Zhe-Kun Zhou Jian Huang Tao Su 

机构地区：[1]Institute of Palaeontology,Yunnan Key Laboratory for Palaeobiology,MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment,Yunnan Key Laboratory of Earth System Science,Yunnan University,Kunming,650500,China [2]CAS Key Laboratory of Tropical Forest Ecology,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla,666303,China [3]Vietnam National Museum of Nature,Vietnam Academy of Science and Technology,18 Hoang Quoc Viet,Hanoi,Viet Nam [4]Graduate Academy of Science and Technology,Vietnam Academy of Science and Technology,18 Hoang Quoc Viet,Hanoi,Viet Nam [5]CAS Key Laboratory of Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming,650204,China [6]Birbal Sahni Institute of Palaeosciences,Lucknow,226007,India

出　　处：《Plant Diversity》2022年第4期406-416,共11页植物多样性（英文版）

基　　金：supported by National Natural Science Foundation of China(NSFC)(31800183,41922010,42002020,41661134049);Yunnan Basic Research Projects(202001AU070137,2019FB026);Chinese Academy of Sciences"Light of West China"Program(2020000023);the CAS 135 program(2017XTBG-T03);Project“Study,collection of fossil woods in Vietnam for exhibition in System of Vietnam National Museum of Nature”(CT0000.01/19-21).

摘　　要：Recent paleobotanical investigations in Vietnam provide a good opportunity to improve our understanding of the biodiversity and paleoclimatic conditions in the geological past of Southeast Asia.Palms(Arecaceae)are a diverse family of typical thermophilous plants with a relatively low tolerance for freezing.In this study,we describe well-preserved fossil palm leaves from the Oligocene Dong Ho Formation of Hoanh Bo Basin,northern Vietnam.Characters of the fossil leaves,such as a fan-shaped costapalmate lamina,an unarmed petiole,a costa slightly enlarged at the base that then tapers distally into the blade,and well-preserved amphistomatic leaves with cuticles,suggest that they represent a new fossil species,which we herein designate Sabalites colaniae A.Song,T.Su,T.V.Do et Z.K.Zhou sp.nov.Together with other paleontological and palaeoclimatic evidence,we conclude that a warm climate prevailed in northern Vietnam and nearby areas during the Oligocene.

关 键 词：FOSSIL LEAF OLIGOCENE PALEOCLIMATE Palm Vietnam 

分 类 号：Q914[天文地球—古生物学与地层学]