| 山西新荣地区巨型蜥脚类恐龙股骨化石的发现及其埋藏环境 |
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| 作者姓名： | 董黎阳 薛沛霖 张财 刘颖超 李瑜 |
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| 作者单位： | 山西地质博物馆,太原 030021 |
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| 基金项目： | 山西省国土资源厅“山西晚古生代锯齿龙类脊椎动物化石及地层系统调查”项目资助 |
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| 摘 要： | 首次在山西新荣地区晚白垩世助马堡组发现了巨型蜥脚类恐龙股骨化石。通过详细观测该股骨化石的保存状态、保存长度和股骨近端最大长度,估算该股骨化石实际长度约1.9 m,该蜥脚类恐龙体长可能超过30.0 m。在对化石层沉积相和古流向分析的基础上,分析了该股骨化石的埋藏环境。助马堡组为一套规模大、弯曲度高、水动力强的曲流河沉积,该蜥脚类恐龙死后在曲流河中经短—中距离搬运后被埋藏。新荣地区巨型蜥脚类恐龙股骨化石的发现,不仅扩大了晚白垩世巨型蜥脚类恐龙在中国北方地区的分布范围,同时对左云—新荣地区白垩纪古气候和古环境的研究具有重要意义。
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| 关 键 词： | 巨型蜥脚类恐龙 埋藏环境 曲流河沉积 山西新荣地区 |
| 收稿时间： | 2018-05-10 |
Discovery of gigantic sauropod femur fossils and the burial environment in Xinrong area,Shanxi Province |
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| Authors: | DONG Liyang XUE Peilin ZHANG Cai LIU Yingchao LI Yu |
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| Institution: | Shanxi Museum of Geology, Taiyuan 030021, China |
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| Abstract: | Recently the gigantic sauropod femur fossils have been first discovered in Zhumapu Formation of Upper Cretaceous in Xinrong area of Shanxi Province. Through the observation of preservation occurrence, remaining length and proximal end of the femur, the authors estimated the real length of the femur and the body length of this sauropod. It turns out that the real length of this femur is probably 1.9 m and the body length of the sauropod may reach more than 30.0 m. Furthermore, based on the analysis of sedimentary facies and paleocurrent directions, the authors discussed the burial environment of the femur fossils. The results show that Zhumapu Formation belongs to the meandering river deposit with grand scale, high degree of curvature and strong hydrodynamic force. This sauropod has been buried in the meandering river after a short-medium distance transportation. Discovery of the gigantic sauropod in this area has not only expanded the distribution range of gigantic sauropods in Late Cretaceous in North China , but also is of great significance to Cretaceous paleoclimate and paleoenvironment research in Zuoyun-Xinrong areas. |
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| Keywords: | gigantic sauropod burial environment meandering river deposit Xinrong area in Shanxi Province |
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