|
|||||
|
|
A new ornithomimid dinosaur with North American affinities from the Late Cretaceous Qiupa Formation in Henan Province of China |
|
| Authors: | Li XuYoshitsugu Kobayashi Junchang LüYuong-Nam Lee Yongqing LiuKohei Tanaka Xingliao ZhangSonghai Jia Jiming Zhang |
| Institution: | a Henan Geological Museum, Zhengzhou, Henan 450016, China b Hokkaido University Museum, Hokkaido University, Sapporo 060-0810, Japan c Institute of Geology, Chinese Academy of Geological Sciences, Beijing 10037, China d Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, South Korea e Department of Geoscience, University of Calgary, Calgary T2N 1N4, Canada |
| Abstract: | A partial skeleton of the ornithomimid dinosaur, discovered from the Late Cretaceous Qiupa Formation of Luanchuan County, Tantou Basin, Henan Province, China, is described here and assigned to a new genus and species, Qiupalong henanensis, with unique features (a notch on the lateral surface of the lateral posterior process of the proximal end of tibia and a small pit at the contact between astragalus and calcaneum). A phylogenetic analysis in this study suggests that it is a derived ornithomimid and form a monophyly with North American ornithomimids (Struthiomimus altus and Ornithomimus edmontonicus), sharing two characters (straight pubic shaft and large acute angle between pubic shaft and boot). Some characters (small anterior process of the pubic boot and curved pedal unguals) are seen in basal ornithomimosaurs as well, but these features in Q. henanensis are reversal. Qiupalong is the first definitive ornithomimid from outside of the Gobi Desert and is the southern-most occurrence of Late Cretaceous ornithomimid from eastern Asia, demonstrating southern extension of ornithomimid distribution in Asia. |
| Keywords: | Dinosauria Ornithomimosauria Ornithomimidae Qiupalong henanensis Qiupa Formation Late Cretaceous Henan Province China |
| 本文献已被 ScienceDirect 等数据库收录！ | |