New research progress on the paleoflora in the earliest triassic of western Guizhou and eastern Yunnan, South China

被引：6
|
作者：
Chen J.-H. [1 ]
Yu J.-X. [2 ]
Huang Q.-S. [1 ]
Broutin J. [3 ]
Song Q.-Q. [1 ]
Chen B. [1 ]
机构：
[1] Faculty of Earth Sciences, China University of Geosciences
[2] Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences
[3] Laboratory of Paleobotany and Paleoecology, University Paris 6
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2011年 / 36卷 / 03期
关键词：
Earliest Triassic; FAD of Annalepis; Paleoclimate; Paleoflora; Stratigraphy; Western Guizhou and eastern Yunnan; China;
D O I：
10.3799/dqkx.2011.051
中图分类号：
学科分类号：
摘要：
Early Lower Triassic plants are little known in China, especially in South China. This paper presents the paleofloral assemblage from the top of Xuanwei and the lower of the Kayitou Formations in western Guizhou and eastern Yunnan, China. Fossil plants in this area (Annularia shirakii, Lobatannularia sp., Paracalamites stenocostatus, Gigantopteris sp., Pecopteris sp., which are all the Permian relicts) from the bottom of the Kayitou Formation described by other people in 1970s are covered. In addition, many important new fossil plants in the evolution during the Permiansic interval, such as Isoetes Annalepis (including A. zeilleri, A. brevicystis), Peltaspermacae Peltaspermum (including P. martinsii, P. lobutalum, P. sp.), Lepidodendron and Stigmaria and so on are also reported. Both the new type and the "Gigantopteris-flora" relicts are characterized with the Early Triassic Induan paleofloral features in South China. This paleofloral assemblage contains 31 species in 14 genera. These fossil plants are in association with an early Lower Triassic marine fauna (Bivalves, Ostracods, Brachiopods and Ammonites). So the geological age of this paleoflora is Early Triassic Induan stage, while the FAD of Annalepis is regarded as the marker, representing the beginning of Triassic. Based on analyzing paleoflora and limnology of the top of Xuanwei and the lower of Kayitou Formations, it is concluded that tropical and humid conditions persisted in western Guizhou and eastern Yunnan throughout the Permian and Earliest Triassic.
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页码：500 / 510
页数：10
相关论文
共 25 条
  • [1] Blanckenhorn M., Die fossile flora des buntsandsteins und des muschelkalks der umgegend von commern, Palaeontographica, 32, pp. 117-153, (1886)
  • [2] Cantrill D.J., Webb J.A., Permineralized pleuromeid lycopsid remains from the Early Triassic Arcadia Formation, Australia, Review of Palaeobotany and Palynology, 102, pp. 189-211, (1998)
  • [3] Fliche P., Flore fossile du Trias en Lorraine et en France-Comte, Bulletin Social Science Nancy, III, 11, pp. 1-297, (1910)
  • [4] Grauvogel-Stamm L., La flore du Gres a Voltzia (Buntsandstein superieur) des Vosges du Nord (France), Morphologie, Anatomie, Interpretations phylogenique et paleogeographique, Science Geology Memory, 50, pp. 1-225, (1978)
  • [5] Li X.X., Fossil floras of China through the geological ages, pp. 229-253, (1995)
  • [6] Mcloughlin S., Lindstrom S., Drinnan A.N., Gondwana floristic and sedimentological trends during the Permian-Triassic transition: New evidence from the Amery group, northern Prince Charles Monutains, East Antarctica, Antarctica Science, 9, 3, pp. 281-298, (1997)
  • [7] Meng F.S., Fossil plants, Yichang Institute of Geology and Mineral Resources, ed., Geology in Hainan Island (I): Stratigraphy and Paleontology, (1992)
  • [8] Meng F.S., Zhang Z.L., Niu Z.J., Primitive Lycopsid flora in the Yangtze valley of China and systematics and evolution of Isoetes, (2000)
  • [9] Schimper W.P., Mougeot A., Monographie des plantes fossiles du Gres bigarre de la chaine des Vosges, Engelmann, (1844)
  • [10] Wang L.X., Xie Z.M., Wang Z.Q., On the occurrence of Pleuromeia from the Qinshui basin in Shanxi Province, Acta Palaeontologica Sinica, 17, 2, pp. 195-212, (1978)
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