| 李兴文,胡义,唐力,郭岐明.汉中天坑群发现的东方剑齿象化石及其地质时代[J].贵州地质,2021,38(1):29-34, 70 |
| 汉中天坑群发现的东方剑齿象化石及其地质时代 |
| Stegodon orientalis Fossil Discovered in Hanzhong Tiankeng Group and Its Geological Age |
| 投稿时间：2020-06-24 |
| DOI： |
| 中文关键词: 汉中天坑群 天星岩竖井 东方剑齿象 地质时代 晚更新世 |
| 英文关键词:Hanzhong Tiankeng group Tianxingyan cenote Stegodon orientalis geological age Late Pleistocene |
| 基金项目:中国地质调查局全国重要古生物化石调查与保护监测示范项目(DD20190601)；陕西省重点研发计划项目(2017ZDXM-SF-27-1)。 |
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| 中文摘要: |
| 本文对汉中天坑群天星岩竖井中发现的剑齿象化石进行了初步研究，通过形态特征对比认为其可归为东方剑齿象(Stegodon orientalis)，化石是由地表流水将剑齿象遗骸分解后的骨骼带入竖井中而形成的。综合对东方剑齿象的生存时代、化石赋存层位的岩性特征和时代以及天星岩竖井的形成时代等方面的分析结果，认为天星岩竖井中东方剑齿象化石的地质时代为晚更新世，可能为晚更新世晚期。天星岩竖井中东方剑齿象化石的发现对于研究汉中天坑群地区岩溶地貌的形成时代、第四纪时期古气候环境具有重要意义。 |
| 英文摘要: |
| Investigation and Research Base of IAG, Xi’an 710054, China)The Stegodon fossil found in Tianxingyan cenote of Hanzhong Tiankeng group is described in this paper. Based on morphological comparison and measured data, it can be attributed to Stegodon orientalis.Moreover, the fossil source is preliminary studied and analyzed. Based on the analysis of the survival age of Stegodon orientalis, the lithological characteristics of fossil-bearing beds and the formation age of Tianxingyan cenote, the geological age of Stegodon orientalis found in Tianxingyan cenote is inferred and it is preliminarily believed that it may have lived in the late Late Pleistocene. The discovery of Stegodon fossils in Tianxingyan cenote will provide important paleontological data for the study of the formation age of karst landform and Quaternary paleoclimate, paleoenvironment in Hanzhong Tiankeng group area. |
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