|Named By:||Lu J, Xu L, Jia S, Zhang X, Zhang J, Yang L, You H, Ji Q in 2009|
|Time Period:||Early Cretaceous, Aptian-Albian|
|Location:||China, Henan Province - Manchuan Formation|
|Size:||Uncertain due to incomplete remains, but roughly estimated to be around 30 meters long|
|Fossil(s):||Partial remains including a tibia, vertebrae and ribs|
|Classification:||| Chordata | Reptilia | Dinosauria | Saurischia | Sauropodomorpha | Sauropoda ||
Ruyangosaurus (Ruyang County lizard) is a genus of titanosauriform sauropod dinosaur recovered from the Early Cretaceous Haoling Formation of China. The type species is R. giganteus, described in 2009 by a group of scientists from the Chinese Academy of Sciences and the Henan Geological Museum. Along with Huanghetitan and Daxiatitan, Ruyangosaurus is among the largest dinosaurs discovered in Cretaceous Asia.