| 宁夏六盘山地区早白垩世恐龙足迹研究 |
| |
| 关键词:dinosaur footprint Early Cretaceous Liupanshan area Ningxia |
| 基金项目:国家自然科学基金项目(编号: 41672019; 41688103);宁夏自然科学基金项目“宁夏中生代古生物化石资源调查”(编号: NZ15216);宁夏地勘基金项目“宁夏古生物化石资源调查”(编号: 2013-地勘基金19) |
|
| 摘要点击次数: 2940 |
| 全文下载次数: 1883 |
| 摘要: |
| A Study of Early Cretaceous Dinosaur Tracks in Liupanshan Area, Ningxia |
| This paper is based on the investigation of the dinosaur footprints found in Liupanshan area of Ningxia. The footprints were discovered from 5 fossil localities which belong to the Lower Cretaceous Heshangpu Formation, Liwaxia Formation and Madongshan Formation in Longde County and Jingyuan County, Guyuan City, Liupanshan area, Ningxia. These fossils consist of the sauropod and the ornithopod footprints, dominated by sauropod ones, including four trackways. Among them, the dinosaur individuals from the Xiangshui Town in Longde County are smaller, whose hip height are only 1.44 m long, the rest of the other trackways represent larger dinosaurs, and their hip heights are between 2.79 and 3.27 m. The hip height of ornithopod dinosaur is about 0.48 m, suggesting small ornithopod dinosaurs. On the basis of the Alexander's speed calculation method, the speeds of dinosaurs are estimated. The results show that the speed of sauropods was 0.34~1.41 m/s, and the ratio of stride length to hip height was less than 2, both indicating normal walking states. The footprints are mainly preserved in silty mudstone and fine-grained sandstone, with horizontal bedding, ripple marks, mud cracks, hail marks and other sedimentary structures, bearing plant fragment fossils as well as a lot of invertebrate burrows. Judging from the lithological and sedimentary study, the dinosaur tracks were preserved in lake-shore. |
| YANG Qing,LÜ Jun-chang,WANG Jin-min,YANG Ke-cheng,ZHAO Ming,ZHAO Ya,WAN Yang,WEI Li-xin,ZONG Li-yi,LIU Xiao-li,ZHU Jian-zhong,HAN Jia-yin.2019.A Study of Early Cretaceous Dinosaur Tracks in Liupanshan Area, Ningxia[J].Acta Geoscientica Sinica,40(3):483-491. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|