甘肃省永靖县盐锅峡发现大型蜥脚类恐龙足迹

杜远生; 李大庆; 彭冰霞; 雷汝林; 白仲才

Volume 27 Issue 4

Jul. 2002

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Article Navigation > Earth Science > 2002 > 27(4): 367-372

DU Yuan-sheng, LI Da-qing, PENG Bing-xia, LEI Ru-lin, BAI Zhong-cai, 2002. Largescale Dinosaur Footprints of Sauropod from Yanguoxia, Yongjing County, Gansu Province. Earth Science, 27(4): 367-372.

Citation:

DU Yuan-sheng, LI Da-qing, PENG Bing-xia, LEI Ru-lin, BAI Zhong-cai, 2002. Largescale Dinosaur Footprints of Sauropod from Yanguoxia, Yongjing County, Gansu Province. Earth Science, 27(4): 367-372.

DU Yuan-sheng, LI Da-qing, PENG Bing-xia, LEI Ru-lin, BAI Zhong-cai, 2002. Largescale Dinosaur Footprints of Sauropod from Yanguoxia, Yongjing County, Gansu Province. Earth Science, 27(4): 367-372.

Citation:

DU Yuan-sheng, LI Da-qing, PENG Bing-xia, LEI Ru-lin, BAI Zhong-cai, 2002. Largescale Dinosaur Footprints of Sauropod from Yanguoxia, Yongjing County, Gansu Province. Earth Science, 27(4): 367-372.

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Largescale Dinosaur Footprints of Sauropod from Yanguoxia, Yongjing County, Gansu Province

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
Research Center of Paleontology, Bureau of Geology and Resource Exploration of Gansu Province, Lanzhou 730050, China

Received Date: 2001-11-09
Publish Date: 2002-07-25

Abstract

Abstract

There are a lot of dinosaur footprints in the Early Cretaceous from Yanguoxia, Yongjing County, Gansu Province. Ten track sites about 293 footprints within 2 km² area in Yanguoxia are discovered at present, three of which are being unearthed. Among all the sites, the footprints in site 1 are best preserved, where 212 footprints are found and arranged in 18 trackways or footprint groups within about 600 m², consisting of 138 sauropod footprints, forming 4 well-preserved trackways and 3 footprint groups, 60 theropod footprints from 9 trackways, 3 ornithopod footprints from 1 trackways and 8 pterosaur footprints from 1 trackways. The largest sauropod footprint is 69 cm×112 cm in manus and 150 cm×142 cm in pes. It is suggested that it is one of the largest sauropod footprints in scale in the world. In view of their morphology, they can be divided into three types. The first is crescentic outline of manus and elliptical outline of pes, in which the footprints in manus and in pes are not coincident and rotate outward. The second is semicircular outline of manus and elliptical outline of pes, in which the footprints in manus and in pes are partly coincident and rotate outward. The third is semicircular outline of manus and broadly U-shaped outline of pes, in which the footprints in manus and in pes separate obviously and rotate outward. A sauropod footprint with a positive rotation is related to huge weight of the sauropod dinosaur. On the basis of calculation, the hip height of dinosaur is from 3.04 m to 5.3 m, and speed is about 2.3-3.4 km/h. Analysis of Cretaceous environment and paleogeography indicates that Gansu Lanzhou-Qinghai Minghe would be a freshwater lake basin of midland. The footprints of Yanguoxia were found on the western bank of the "Wusushan isolated paleo-island" nearest of the center of the lake. It was not humid in Cretaceous, but near the bank there was abundant grass and water, which could have been a paradise for dinosaur and the other terrigenous animals.
- sauropod,
- dinosaur footprint,
- Cretaceous,
- Gansu Province

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References(24)

References

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