Description and Phylogenetic Position of Dinosaur Eggshells from the Luanchuan Area of Western Henan Province, China
  • 【摘要】

    Here, we examine 145 dinosaur eggshells from a new fossil locality in the Qiupa Formation (Upper Cretaceous) of the Luanchuan area in western Henan Province, China. The eggshells display elongatoolith... 展开>>Here, we examine 145 dinosaur eggshells from a new fossil locality in the Qiupa Formation (Upper Cretaceous) of the Luanchuan area in western Henan Province, China. The eggshells display elongatoolithid macro- and microstructures, including ridges and nodes on the outer surface, two ultrastrncturai layers, and an undulatory boundary between the mammiilary and continuous layers.A phylogenic analysis shows that the Luanchuan eggshells belong to the ooclade Eiongatoolithidae.Within Elongatoolithidae, the thickness ratio of the mammillary layer to the entire eggshell, and the porosity of the Luanchuan eggshells are comparable to the oogenera Macroolithus and Elongatoolithus. There is no direct evidence for the taxonomic identity of the Luanchuan eggshells;however, they were likely laid by oviraptorids based on their phyiogenetic position and their similarities with known oviraptorid eggs. 收起<<

  • 【作者】

  • 【作者单位】

    Department of Geoscience/Institute of Geology/Hokkaido University Museum/Henan Geological Museum/North China University of Water Conservancy and Electric Power

  • 【刊期】

    地质学报(英文版) SCI 2011年1期

  • 【关键词】

    dinosaur eggshells  Qiupa Formation  Late Cretaceous  Luanchuan  Henan Province  China 

  • 【基金项目】

    the Natural Science Foundation of China the Basic Outlay of Scientific Research Work from the Ministry of Science and Technology of the People's Republic of China the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry,to Lü J.C.The manuscript was improved by an anonymous reviewer