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

甘肃永靖盐锅峡早白垩世翼龙足迹的发现及意义

1.
中国科学院广州地球化学研究所, 广东广州 510640
2.
中国地质大学地球科学学院, 湖北武汉 430074
3.
甘肃省第三地质勘察院, 甘肃兰州 730050

基金项目:

国家自然科学基金项目 40042007

详细信息

作者简介:
彭冰霞(1977-), 女, 现在中国科学院广州地球化学研究所攻读博士学位, 主要从事遗迹学、沉积学及古环境研究

中图分类号: Q915.2
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- 被引次数: 0
出版历程
- 收稿日期: 2003-04-05
- 刊出日期: 2004-01-25

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

摘要

摘要: 甘肃永靖盐锅峡恐龙足迹1号化石点中保存有翼龙足迹, 该足迹是我国翼龙足迹的首次发现.翼龙足迹为四足行走, 行迹宽.前脚为不对称三趾型, 趾行式, 其中Ⅱ趾最短, Ⅳ趾最长, 足迹外偏, 偏角大, Ⅳ趾与行迹交角为160°~ 180°.后脚外形为近长方形, 四趾型, Ⅱ、Ⅲ趾较Ⅰ、Ⅳ趾长, 行式, 脚长为宽的3倍, 足迹外偏, 偏角30°.足迹特征表明该翼龙足迹属于一新种.沉积特征表明翼龙足迹产于湖岸环境.
- 翼龙足迹 /
- 早白垩世 /
- 甘肃省
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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图 1 研究区位置示意图

Fig. 1. Position of the study area

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图 2 翼龙行迹(图中标号示前脚印)

Fig. 2. Pterosaur trackway (the number is manus of pterosaur track)

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图 3 翼龙前脚印(镜头盖长55 mm)

Fig. 3. Manus of pterosaur track (camera cap is 55 cm long)

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图 4 翼龙后脚印(左侧) 和前脚印(右侧) (镜头盖长55 mm)

Fig. 4. Pes (left) and manus (right) of pterosaur track (camera cap is 55 cm long)

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参考文献(17)

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