陕西商洛地区下白垩统大型兽脚类恐龙足迹  

Early Cretaceous large theropod footprints from the Shangluo City,Shaanxi Province

作　　者：胡松梅 邢立达[2,3] 王昌富 杨苗苗 

机构地区：[1]陕西省考古研究院,陕西西安710054 [2]阿尔伯塔大学生物科学系,加拿大埃德蒙顿T6G 2E9 [3]中国科学院脊椎动物进化系统学重点实验室,北京100044 [4]商洛市博物馆,陕西商洛726000

出　　处：《地质通报》2011年第11期1697-1700,共4页Geological Bulletin of China

基　　金：中国科学院脊椎动物进化系统学重点实验室开放课题基金项目(编号:2011LESV008)

摘　　要：记叙了中国陕西省商洛市邵涧村下白垩统东河群2个大型兽脚类恐龙足迹,并将其归于Megalosauripus isp.。东河群的时代与热河生物群同期,邵涧Megalosauripus isp.可能可与热河生物群的大型兽脚类恐龙之足部形态做简单对比。此外,邵涧Megalosauripus isp.造迹者的体长约为7.4m,这意味着早白垩世的陕西中南部亦存在着大型的兽脚类恐龙。邵涧Megalosauripusisp.的发现,不仅为中国早白垩世恐龙足迹增加了新的成员,而且为将来在该地区下白垩统中发现大型兽脚类恐龙的骨骼化石提供了确凿的依据。Described herein are two large theropod tracks from the Lower Cretaceous Donghe Group in Shaojian Village,Shangluo City,Shaanxi Province.The tracks are attributed to Megalosauripus isp.The Donghe Group is contemporaneous with the Jehol Biota. Megalosauripus isp.at the Shaojian track site can be compared with the foot structure of large theropods of the Jehol Biota.Furthermore, the length of the track maker of Megalosauripus isp.is approximately 7.4 m,which suggests that large theropods occurred in central-southern Shaanxi Province in the Lower Cretaceous.The discovery of Megalosauripus isp.adds a new member to Lower Cretaceous dinosaur footprints in China,and also indicates the very probable discovery of large-sized theropod dinosaur skeletons from the Lower Cretaceous sediments of this area in the near future.

关 键 词：商洛地区 早白垩世 东河群 兽脚类足迹 Megalosauripus isp. 

分 类 号：P534.53[天文地球—古生物学与地层学] Q915.863[天文地球—地质学]