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J Integr Plant Biol, 2005, 47 (3): -, Research Article
Conifer Woods of the Pliocene Age from Yunnan, China
Tie-Mei YI, Cheng-Sen LI,Xiao-Mei JIANG
doi: 10.1111/j.1744-7909.2005.00041.x
Abstract
The Tertiary floras play an integral role in understanding the biodiversity and interactions between climate and vegetation in Yunnan, China. The fossil spores, pollen grains, and leaves in this region have been investiaged intensively. In comparison, the woods have been studied relatively little. A large number of Pliocene wood specimens was collected from the opencast lignite coal mine of Hongxing situated in Changning County of Yunnan Province. Among the collection, Tsuga cf. dumosa (D. Don) Eichler and Pinus cf. armandii Franchet were identified based on wood structures. The subtle feature of tori extensions is reported in the wood of T. cf. dumosa. Considering the climatic requirements of modern T. dumosa and P. armandii, the two species of conifer described from Pliocene sediments probably grew in mountainous terrain at an elevation of approximately 2 300 m, in a cool and humid environment.
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