New Eusauropod Dinosaur from Yuanmou of Yunnan Province, China  

作　　者：LUE Junchang LI Shaoxue JI Qiang WANG Guofu ZHANG Jiahua DONG Zhiming 

机构地区：[1]Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 [2]Yuanmou Museum, Yuanmou, Yunnan 651300 [3]Chuxiong Museum, Chuxiong, Yunnan 675000

出　　处：《Acta Geologica Sinica(English Edition)》2006年第1期1-10,共10页地质学报（英文版）

摘　　要：Yuanmousaurusjiangyiensis gen. et sp. nov. is erected based on an incomplete skeleton. It is characterized by more complex structures of the neural arches in the dorsal vertebrae than those in Omeisaurus, but less complex than those of Euhelopus; the dorsal vertebra bears 9 laminae, forming three cavities on the lateral surface of the neural arch; the dorsal vertebral neural spines with dorsoventrally-oriented cavities are similar to those of Omeisaurus and Patagosaurus. Yuanmousaurus is more primitive than Euhelopus, but more derived than Omeisaurus. The similar dorsal vertebral structure between Yuanmousaurus and Patagosaurus may indicate that they have a close relationship to each other.Yuanmousaurusjiangyiensis gen. et sp. nov. is erected based on an incomplete skeleton. It is characterized by more complex structures of the neural arches in the dorsal vertebrae than those in Omeisaurus, but less complex than those of Euhelopus; the dorsal vertebra bears 9 laminae, forming three cavities on the lateral surface of the neural arch; the dorsal vertebral neural spines with dorsoventrally-oriented cavities are similar to those of Omeisaurus and Patagosaurus. Yuanmousaurus is more primitive than Euhelopus, but more derived than Omeisaurus. The similar dorsal vertebral structure between Yuanmousaurus and Patagosaurus may indicate that they have a close relationship to each other.

关 键 词：Yuanmou Yunnan Province Middle Jurassic Yuanmousaurus SAUROPODA 

分 类 号：Q915.873[天文地球—古生物学与地层学]