研究和讨论贵州贞丰龙场中三叠统关岭组中发现的一系列足迹。通过与贞丰县牛场足迹进行比较，利用现场采制的石膏拓模以及胶片描图，绘制单个足迹和一系列足迹的图形，并测出步蝠角和趾间角等角度。参照国际上流行的计算方法，利用足迹学的知识对现场足迹进行分析，初步得出造迹动物形态和运动状态的一些特征。同时，通过牛场、龙场两地足迹趾尖印痕的对比，着重讨论手兽在运动时脚掌着地和发力的挣点，从而阐述该造迹动物的一些运动习性。文中还将研究的足迹与恐龙进行简单对比，期待以后对手兽更深入的研究能够更好地认识恐龙的出现。

This paper aims at discussing Chirotherium tracks in the Middle Jurassic Guanling Formation of Zhenfeng,Guizhou Province.The authors of this paper make a comparison between the footprints found in the two track sites in footprint size,shape and pace angulations etc.We made more than 10 plaster casts in both track sites.Based on these casts and the field records,the authors calculated the hip height and locomotion speed of the track-makers according to conventional calculation methods.The gait of the track-makers is also postulated.The authors think that it is reasonable to compare Chirotherium with dinosaurs.We hope that further study of Chirotherium may help understand the origin and extinction of dinosaurs.

Q959