Palaeocupressinoxylon Uniseriale N. Gen. N. Sp., a Gymnospermous Wood from the Upper Permian of Central Taodonggou, Southern Bogda Mountains, Northwestern China


A silicified wood, Palaeocupressinoxylon uniseriale n. gen. n. sp., is described from the upper Permian of the Central Taodonggou section, Turpan—Hami Basin, Xinjiang Uygur Autonomous Region, northwestern China. Multidisciplinary data including U—Pb ID—TIMS zircon dating, vertebrate and invertebrate biostratigraphic, and cyclostratigraphic correlation from current and previous studies indicate that the fossil bearing interval is Wuchiapingian (late Permian) in age. The pycnoxylic wood consists of thick-walled tracheids and parenchymatous rays. It is characterized by separated uniseriate radial tracheidal pits, uniseriate ray cells, and cupressoid cross-field pitting. The absence of growth rings in the wood, together with the occurrence of Argillisols, Gleysols, and Histosols above and below the fossil interval, suggests that a stable landscape and a perennially humid climate prevailed in the Taodonggou area during the Wuchiapingian.


Geosciences and Geological and Petroleum Engineering

Research Center/Lab(s)

Center for Research in Energy and Environment (CREE)


This research was supported by the National Natural Science Foundation of China (41872013, 41530101), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB26000000, XDB18000000), the National Science Foundation (NSF EAR 1714749), and the State Key Laboratory of Palaeobiology and Stratigraphy (20181102).

Keywords and Phrases

Abietinean radial pitting; Angara flora; Cupressoid cross-field pitting; Wood anatomy; Wuchiapingian

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Article - Journal

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© 2019 Elsevier Ireland Ltd Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS, All rights reserved.

Publication Date

01 Mar 2020