Biodiversity and Stratigraphic Distribution of the Triassic Xingyi Marine Reptile Fauna, Guizhou Province
详细信息
- 责任者：Ma Letian (Department of Geology and Geological Museum ; Peking University ; Beijing 100871 ; China) ; Ji Cheng
- 刊名：Journal of Stratigraphy
- 出版年：2013
- 卷期：37(2)
- 关键词：法郎组 ; Falang Formation ; 爬行纲 ; Reptilia ; 贵州 ; Guizhou Province
- 页码：p.178-185
- 图表：illus., 3 tables, 40 refs.
- 分类号：1200
- issnNo：ISSN0253-4959
- isbnNo：CN32-1187/P
摘要
Recent excavation in the Wusha area, Xingyi, Guizhou Province, reveals new discoveries of the Triassic Xingyi Biota: 1) the fossiliferous strata can be subdivided into three reptile beds. The Lower Reptile Bed is composed of layers 26～35 and is 1.41 m in thickness, characterized by the abundance of Keichousaurus. The Middle Bed consists of layers 36～44 and is 2.11 m thick, containing both sauropterygians and ichthyosaurs. The Upper Reptile Bed includes the layers 45～53, and its the thickness is 1.88 m. The characteristic taxa in this bed are well-preserved ichthyosaurs, thalattosaurs and crinoids; and 2) the occurrence of sauropterygians in the Lower Bed, including Nothosaurus, Lariosaurus and Keichousaurus, shows a close affinity with the western Tethys, while the occurrence of complete Qianichthyosaurus, Guizhouichthyosaurus and thalattosaurs in the Upper Bed indicates a close relationship with the Guanling Biota.
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