A New Giant Compsognathid Dinosaur with Long Filamentous Integuments from Lower Cretaceous of Northeastern China

doi:
10.3321/j.issn:1000-9515.2007.01.002
Abstract:
A new compsognathid dinosaur, Sinocalliopteryx gigas gen. et sp. nov., is erected based on a complete skeleton from the Early Cretaceous Yixian Formation of western Liaoning, northeastern China. It shares the features with Huaxiagnathus orientalis in having a manus as long as the humerus plus radius, very large and subequally long manual claws Ⅰ and Ⅱ, and reduced olecranon process on the ulna. But it differs from Huaxiagnathus orientalis in having the much large size, a very long maxillary process of premaxilla not extending the vertical level of the maxillary antorbital fossa, and the proportionally longer ulna and so on. Sinocalliopteryx gigas gen. et sp. nov. represents the largest species among the known compsognathid dinosaurs, suggesting the tendency of the body enlargement in compsognathids to some extent. The long filamentous integuments are attached to the whole body of this compsognathid, confirming that such integuments evolved firstly in the basal coelurosaurs. This new giant compsognathid was a fierce carnivorous theropod, as shown further by an incomplete dromaeosaurid leg inside its abdominal cavity.
作者
Author: JI Shu'an[1]    JI Qiang[2]    L(U) Junchang    YUAN Chongxi
作者单位
  1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037
  2. Key Laboratory of Stratigraphy and Paleontology, Chinese Academy of Geological Sciences, Beijing 100037
刊 名: 地质学报(英文版)   SCI
Journal: ACTA GEOLOGICA SINICA
年,卷(期) 2007, 81(1)
分类号 P5
Keywords: Compsognathidae 知识脉络    Sinocalliopteryx gen. nov. 知识脉络    giant skeleton 知识脉络    filamentous integuments 知识脉络    Yixian Formation 知识脉络    Early Cretaceous 知识脉络    western Liaoning 知识脉络   
机标分类号 P46 F30
基金项目 国家重点基础研究发展计划(973计划),国家自然科学基金,中国地质调查局资助项目
参考文献和引证文献
参考文献
引证文献
本文读者也读过
相似文献
相关博文
相关数据
互动百科相关词

知识产权声明| 服务承诺| 联系我们| 人才招聘| 客户服务| 关于我们

互联网出版许可证:新出网证(京)字042号  互联网药品信息服务资格证书号:(京)-经营性-2011-0017  信息网络传播视听节目许可证 许可证号:0108284
京ICP证:010071  北京市公安局海淀分局备案编号:110108901585
万方数据知识服务平台--国家科技支撑计划资助项目(编号:2006BAH03B01)©北京万方数据股份有限公司  万方数据电子出版社