The fossil records of Fagaceae and its implications in phylogeny and biogeography
The Fagaceae is a family with about 900 species grouped into seven to ten extant genera.The family palys an important role in Northern hemisphere ecosystem.It dominate forests in tropical,subtropical and temperate in Northern hemisphere.The family has a rich fossil records throughout the Tertiary of the Northern Hemisphere.A critical review of the fossil records provides a basis of understanding the evolutionary and biogeography of the beech family.Cupulate fruits and flowers of two extinct genera,Protofagacea and Antiquacupula from late Santonian stage of the,late Cretaceous of Georgia are the oldest unequivocal remains of Fagaceae.They are different in several significant characters and indicate that the divergence of at least two lineages of Fagaceae have been established by Late Cretaceous.It is obviously that an origin of Fagaceae no later than the Late Cretaceous.Fossil records and modem distributions of each genus of the family were discussed.The family achieved its greatest genetic diversity in Eastern and Southeastern Asia and all modem genera had broader distributions in the Tertiary than today.The paleogeographical distribution of Fagaceae indicates that the family originated in the Northern Hemisphere.
Fagaceae Fossil Phylogeny and Biogeography
Zhekun Zhou
Key Laboratory of Biodiveristy and Biogeography,Kunming Institute of Botanty,the Chinese Academy of Sciences,Kunming 650204
国际会议
乌鲁木齐
英文
37-38
2007-09-01（万方平台首次上网日期，不代表论文的发表时间）