Genus: Lingyuanosaurus YAO, LIAO, SULLIVAN, & XU, 2019
Etymology: In reference to the county-level city of Lingyuan, Liaoning Province, China and Greek, sauros, "lizard."

Species: sihedangensis YAO, LIAO, SULLIVAN, & XU, 2019
Etymology: In refernce to the Shihedang locality, Liaoning, China.

Holotype: IVPP V 23589

Locality: Sihedang Locality, Lingyuan City, Liaoning Province, China.

Horizon: Jehol Group.

Biostratigraphy:

Age: Early Cretaceous.

Material: One cervical centrum, five partial dorsal, sacral, and caudal vertebrae, one complete caudal vertebra, several dorsal ribs, proximal half of left humerus, distal portion of right humerus, two manual unguals, nearly complete left ilium, ?proximal portion of left ischium, complete right femur, incomplete left tibia, ?partial right astragalus, and several unidentified fragments.