作者：李永项，张云翔   

摘要：陕西子洲县中侏罗世延安组砂岩中，同一地点共厚约1.7 m的5个层面发现4种食肉类恐龙足迹，自上而下分别为：(1)第五层面大型三趾型足迹，实雷龙足迹科王氏子洲足迹(新遗迹属、新遗迹种) Zizhoupus wangi ichnogen.et ichnosp.nov.; (2)第四和第三层面中型三趾型足迹，实雷龙足迹科龙尾峁张北足迹 (新遗迹种) Changpeipus longweimaoensis inchnosp.nov.; (3) 第二层面小型三趾或四趾型足迹，虚骨龙类小理河陕西足迹(新遗迹种) Shensipus xiaoliheensis inchnosp. nov.; (4)第一层面小型三趾型足迹，虚骨龙类的铜川陕西足迹Shensipus tungchuanensis。 
关键词：陕西子洲，中侏罗统，延安组，恐龙足迹 
卷期：第55卷，第3期

Early Middle Jurassic dinosaur footprints from Zizhou County,

Shaanxi, China

　　Li Yong-Xiang, Zhang Yun-Xiang 

Abstract  Four types of footprints of carnivorous dinosaurs have been found from the Yan’an Formation of early Middle Jurassic in Zizhou County, Shaanxi, China. From the top to bottom interval, the four types of footprints discovered at five layers in a 1.7 m thick stratum are as follows: 1) the large tridactyl footprints in the fifth layer (e, top) belong to Zizhoupus wangi ichnogen. et ichnosp. nov.; 2) the medium tridactyl footprints in the third and fourth layers (c–d) belong to Changpeipus longweimaoensis ichnosp. nov.; 3) small tridactyl or tetradactyl footprints in the second layer (b) belong to Shensipus xiaoliheensis ichnosp. nov. and 4) small tridactyl footprints in the first layer (a, bottom) belong to Shensipus tungchuanensis. 
Keywords  Zizhou, Shaanxi, Middle Jurassic, Yan’an Formation, dinosaur footprints