DOI: 10.1016/j.palaeo.2016.11.004
论文题名: Xihuphyllum, a novel sphenopsid plant with large laminate leaves from the Upper Devonian of South China
作者: Huang P. ; Liu L. ; Deng Z. ; Basinger J.F. ; Xue J.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 466 起始页码: 7
结束页码: 20
语种: 英语
英文关键词: Fossil plant
; Leaf evolution
; Morphometric analysis
; Plant architecture
; Wutong formation
英文摘要: The sphenopsids first appeared in the Late Devonian, becoming diverse in the Carboniferous and Permian, but are represented now by the single genus Equisetum. In this article, morphologically preserved material of the novel sphenopsid plant, Xihuphyllum megalofolium (Wu) Chen emend. Huang et al., is described from the Upper Devonian Wutong Formation of Zhejiang Province, China, providing new data on the early evolutionary history of this group. This plant is characterized by a hierarchical branching pattern, with robust nodose stems up to 42.5 mm wide and two orders of lateral branches. Morphometric studies show that the internode width of stems and first-order branches are correlated with the internode length. Leaves, cuneate, broadly cuneate, or spatulate in shape and highly variable in size, are arranged in whorls at the nodes of stems and branches. The leaves of Xihuphyllum reach over 80 mm in length and > 3000 mm2 in area, an unusually large size for Paleozoic sphenopsids. Xihuphyllum is reconstructed as having a stature 2–3 m in height, and represents an early, large-bodied member within the extinct Sphenophyllales. The occurrence of Xihuphyllum and contemporaneous members of the same group, including Eviostachya, Hamatophyton, Rotafolia and Sphenophyllum, indicates early diversification of sphenopsids in South China. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68019
Appears in Collections: 过去全球变化的重建
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作者单位: The Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing, China; School of Geosciences and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing, China; Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
Recommended Citation:
Huang P.,Liu L.,Deng Z.,et al. Xihuphyllum, a novel sphenopsid plant with large laminate leaves from the Upper Devonian of South China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,466