Named By: J. Lü, L. Xu, H. Pu, X. Zhang, Y. Zhang, S. Jia, H. Chang, J. Zhang & X. Wei - 2013.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropodomorpha, Sauropoda, Somphospondyli.
Species: Y. ruyangensis (type).
Size: Roughly estimated to be about 20 meters long.
Known locations: China, Henan Province - Haoling Formation.
Time period: Aptian/Albian of the Cretaceous.
Fossil representation: Partial post cranial skeleton.
Yunmenglong is a genus of somphospondylin sauropod dinosaur that lived in China during the early Cretaceous. Although the skeleton of the holotype is incomplete, Yunmenglong is considered to have been related to other genera such as Erketu and Qiaowanlong.
A new sauropod dinosaur (Dinosauria, Sauropoda) from the late Early Cretaceous of the Ruyang Basin (central China) - Cretaceous Research 44: 202 - J. Lü, L. Xu, H. Pu, X. Zhang, Y. Zhang, S. Jia, H. Chang, J. Zhang & X. Wei - 2013.