Genus: Dongyangosaurus LU, AZUMA, CHEN, ZHENG & JIN, 2008
Etymology: Refers to the titanosauriform sauropod dinosaur found from the Chinese administrative unit Dongyang City of Zhejiang Province, China.

Species: sinensis LU, AZUMA, CHEN, ZHENG, & JIN, 2008
Etymology: Greek, sin, "China"; refers to specimen found from China.

Holotype: DYM 04888

Locality: Baidian Village, near the eastern margin of the Jinqu Basin, N29°15'59.7", E120°12'39.4", Dongyang City, Zhejiang Province, China.

Horizon: Fangyan Formation.


Age: Early Late Cretaceous.

Material: A partial vertebral column includes 10 posterior dorsal vertebrae (the anterior one and the third from the last missing centra), complete sacral spines (sacral vertebrae were covered by the ilium and matrix), the 1st and 2nd caudal vertebrae, parts of dorsal ribs, both ilia, the complete pubis and ischium.