滇西祥云地区早侏罗世地层发现恐龙新墓地  

Discovery of a new dinosaur cemetery in Early Jurassic strata in Xiangyun area of western Yunnan

作　　者：胡绍斌 刘军平 曾文涛 王伟 夏彩香 莫雄 关奇 HU Shaobin;LIU Junping;ZENG Wentao;WANG Wei;MO Xiong;XIA Caixiang;GUAN Qi(Yunnan Institute of Geological Survey,Kunming650216;School of Earth Science and Resources,China University of Geosciences,Beijing100083;Key Laboratory of Sanjiang Metallogeny and Resources Exploration and Utilization,MNR,Kunming650051)

机构地区：[1]云南省地质调查院,昆明650216 [2]中国地质大学地球科学与资源学院,北京100083 [3]自然资源部三江成矿作用及资源勘查利用重点实验室,昆明650051

出　　处：《地质论评》2024年第2期759-768,共10页Geological Review

基　　金：云南省古生物化石开发保护调查(编号:530000210000000021416);云南省技术创新人才培养对象资助项目(编号:202305AD160031)的成果。

摘　　要：1938年,云南许氏禄丰龙的发现拉开了云南侏罗纪恐龙研究、发掘的序幕,恐龙化石的发现地从云南禄丰一带向外延展,陆续在云南晋宁、元谋姜驿、云南易门夕阳、武定万德、双柏安龙堡等地报道,但目前恐龙化石的报道均集中在楚雄盆地的中部及东部,而楚雄盆地的西部地区未有报道。笔者等通过全面系统的古生物化石调查,在滇西祥云地区下侏罗统冯家河组首次发现恐龙骨胳化石产地,对该新化石产地开展初步化石剖面调查和修理,共发现有5层恐龙化石富集层,部分化石保存较为完整,未经过长距离搬运,以原地埋藏保存为主,骨胳化石主要有肠骨、椎体、坐骨及肱骨等。这一发现拓宽了云南恐龙化石的分布范围,填补了楚雄盆地西部无恐龙化石的空白,丰富了云南早侏罗世恐龙化石库,为楚雄盆地西部古环境演化及地层对比提供了重要的古生物化石研究素材。In 1938,the discovery of the first dinosaur fossil(Lufenglong)in Yunnan marked the beginning of the Jurassic dinosaur explosion in Yunnan.After generations of geologists’continuous research and excavation,the discovery of dinosaur fossils extended from the Lufeng area to the outside,followed by discoveries in Yimen,Yuanmou,Jinning,Wuding and Shuangbai area in Yunnan,However,the discovery of these dinosaur fossils is concentrated in the central and eastern parts of the Chuxiong Basin,and there have been no reports on the western region of the Chuxiong Basin.Results:Through a comprehensive and systematic investigation of paleontological fossils,the authors discovered for the first time the origin of dinosaur bone fossils in the Fengjiahe Formation of the Lower Jurassic in the Xiangyun area of western Yunnan.A preliminary fossil profile investigation and repair were conducted on the new origin,and a total of 5 enriched layers of dinosaur fossils were found.Some of the preserved fossils are relatively complete,mainly including the intestines,vertebrae,ischium,and humerus.Conclusions:This discovery and research have broadened the distribution range of dinosaur fossils in Yunnan,filling the gap in the absence of dinosaur fossils in the western part of the Chuxiong Basin,greatly enriching the Early Jurassic dinosaur fossil pool in Yunnan,and providing important paleontological fossil research materials for the evolution of the ancient environment and stratigraphic correlation in the western part of the Chuxiong Basin.

关 键 词：早侏罗世 冯家河组 恐龙 楚雄盆地 滇西祥云地区 

分 类 号：P534.52[天文地球—古生物学与地层学] Q915[天文地球—地质学]