| Citation: |
XIANG Kunpeng, HE Yongzhong, ZHAO Lei, AN Yayun, LIU Kuiyong, HE Ben, PAN Yingjuan. The burial features and age of the newly discovered Nothosaur in Guojiawan area, southwestern Guizhou Province[J]. Geological Bulletin of China, 2019, 38(8): 1266-1273.
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The burial features and age of the newly discovered Nothosaur in Guojiawan area, southwestern Guizhou Province
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Abstract
Through the 1:50000 regional geological survey, a new nothosaur fossil site was discovered in Guojiawan area, southwestern Guizhou Province. Based on the field section measurement, the short-distance burial characteristics of the fossils were analyzed in detail, and the age was considered to be Middle Triassic Anisian Stage according to the regional geological mapping and fossil data. Combined with the distribution and the paleogeographic characteristics of the Anisian Stage biotas in the west of Guizhou Province and its adjacent areas, the authors analyzed the possible source. The result shows that Guojiawan area was the possible living place of the nothosaur. The discovery of the nothosaur and its age provides new material and evidence for the evolution and migration of Triassic Marine reptiles, and hence has important scientific significance.
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Keywords:
- Anisian Stage /
- Nothosaur /
- burial features /
- Guojiawan
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References
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XIANG Kunpeng, HE Yongzhong, ZHAO Lei, AN Yayun, LIU Kuiyong, HE Ben, PAN Yingjuan. The burial features and age of the newly discovered Nothosaur in Guojiawan area, southwestern Guizhou Province[J]. Geological Bulletin of China, 2019, 38(8): 1266-1273.
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Figure 1.
The distribution of the major Biotas(sites)in southwestern Guizhou and its adjacent areas
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Figure 图版Ⅰ.
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Figure 图版Ⅱ.
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Figure 2.
The histogram and the characteristics of the main kinds of fossils
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Figure 3.
The lithofacies map of Anisian stage in southwestern Guizhou and its adjacent areas (a) and the geological sketch map of Guojiawan area (b)