Genus: Yuanmousaurus LU, LI, JI, WANG, ZHANG & DONG, 2006
Etymology: The generic name refers to the Chinese administrative unit Yuanmou, which the holotype locality belongs to; and Greek, sauros, "lizard."

Species: jiangyiensis LU, LI, JI, WANG, ZHANG & DONG, 2006
Etymology: Jiangyi, China, in reference to the holotype locality.

Holotype: YMV 601

Locality: Jiangyi, Yuanmou County, Yunnan Province, China.

Horizon: Zhanghe Formation.


Age: Middle Jurassic.

Material: Anterior part of a cervical vertebra, 9 dorsal vertebrae, 2 1/2 posterior sacral vertebrae, 7 caudal vertebrae, both almost complete scapulae, 1 nearly complete right humerus, right ulna and radius, partial right ilium, right femur, right tibia and fibula, astragalus, ungual and other bone fragments.