甘肃永靖盐锅峡早白垩世翼龙足迹的发现及意义

彭冰霞; 杜远生; 李大庆; 白仲才

Volume 29 Issue 1

Jan. 2004

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PENG Bing-xia, DU Yuan-sheng, LI Da-qing, BAI Zhong-cai, 2004. The First Discovery of the Early Cretaceous Pterosaur Track and Its Significance in Yanguoxia, Yongjing County, Gansu Province. Earth Science, 29(1): 21-24.

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The First Discovery of the Early Cretaceous Pterosaur Track and Its Significance in Yanguoxia, Yongjing County, Gansu Province

1.
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
3.
Third Institute of Geology and Exploration of Gansu Province, Lanzhou 730050, China

Received Date: 2003-04-05
Publish Date: 2004-01-25

Abstract

Abstract

A group of pterosaur trackway is preserved in site 1 of dinosaur tracksite of Yanguoxia, Yongjing County, Gansu Province. The pterosaur trackway is the first one discovered in China. The pterosaur trackway is quadrupedal, with wide gauge. Manus impression is strongly asymmetrical, digitigrade, tridactyl, with three digits impression showing outward rotation; digit Ⅱ is the shortest while digit Ⅳ is the largest. And digit Ⅳ subtends an angle of about 160°-180° relative to the trackway axis. Pes impression is sub-rectangular in shape which is three times longer than the width and tetradactyl with digits Ⅱ and Ⅲ longer than digits Ⅰ and Ⅳ, and outward rotation of about 30° relative to trackway axis. Based on the character of pterosaur tracks, the authors assign them to a new ichnosp. The sedimentology of this site reflects a paleoenvironment of lake shoreline where pterosaur tracks occur.
- pterosaur trackway,
- Early Cretaceous,
- Gansu Province

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References(17)

References

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