Identification of the early Early Pliocene fossil woods from Ninghai in Zhejiang Province and its palaeoenvironmental implications
Cheng Yeming1 Yi Tiemei2 Li Chengsen3
1 Geological Museum of China, Beijing 100034; 2 Beijing Institute of Science and Technology Information, Beijing 100120; 3 Institute of Botany, Chinese Academy of Sciences, Beijing 100093
Abstract：Fossil woods were collected from the Lower Pliocene Shengxian Group near Daoshiqiao village of Chayuan Town，Ninghai County of Zhejiang Province.The specimens were examined microscopically to determine taxonomic affinities.Two fossil taxa were identified based on anatomical characters.One wood is Liquidambar hisauchi of Hamamelidaceae.Its combined characteristics include distinct growth ring，diffuse-porous wood，scalariform perforation plate with 10-23 bars，helical thickenings only in the end of vessels，vessel diameters between 50-100μm and ray width between 1-3 seriates.The other one is Quercus shimakurae of Fagaceae.Its combined characteristics include very distinct growth ring，ring-porous wood，solitary pore，vessel-ray pitting in paliform，simple perforation，axial parenchyma diffuse-in-aggregate and banded apotracheal，uni-seriate or very wide rays.Results of the palynomorph assemblage research indicate that the vegetation of this period was subtropical evergreen and deciduous broad-leaved mixed forest and Liquidambar and Quercus were the dominant.
Cheng Yeming,Yi Tiemei,Li Chengsen. Identification of the early Early Pliocene fossil woods from Ninghai in Zhejiang Province and its palaeoenvironmental implications[J]. JOPC, 2013, 15(1): 105-112.
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