Lots of fossil spore and pollen grains are obtained from Zk

1

Zk

6

and Zk

7

wells in Nanling Basin

Anhui Province.The Paleogene sporo-pollen may be divided into 4 assemblages in ascendant order:1.The Quercoidites microhenrici-Q.herici-Ulmipollenites-Rhoipites assemblagein the second member of the Shuangta group of the Upper Paleocene-Lower Eocene is characterized by the dominance of Fagaceae and Ulmaceae

showing a vegetational landscape of the broad leaf forest and a little dry tropicalsubtropical climate.2.The Ulmipollenites-Quercoidites-Taxodiaceaepollenites-Pterisisporites assemblage in the third member of the Shuangta Group of the Middle and Upper Eocene is dominanted by angiospermae

indicating a vegetational landscape of the coniferous and broad lear mixed forest

showing warm-hot and a little dry southern subtropical climate.3.The Pinuspollenites-Laricoidites-Taxodiaceaepollenites-Ulmipollenites assemblage in the lower part of the fourth member of the Shuangta Group of the Lower Oligocene is dominanted by Txodiaceae

Pinaceae and Laricoidites

which represents the coniferous and broad leaf mixed forest of warm and moist subtropical climate.4.The Ulmipollenites-Taxodiaceaepollenites-Quercoidites assemblage in the upper part of the fourth member of the Shuangta Gooup of the Middle and Upper Oligocene is dominented by the deciduous broad leaved trees

showing a vegetational landscape of the coniferous and broad leaf mixed forest in a warm and humid northern subtropical climate.