Genus: Yongjinglong LI, LI, YOU, & DODSON, 2014
Etymology: The generic name "Yongjiang," from ancient Chinese, refers to Yougjing County, which is close to the fossil location of the new sauropod and which also yields numerous dinosaur track fossils; and long, "dragon," all in Chinese.

Species: datangi LI, LI, YOU, & DODSON, 014
Etymology: The specifi name "datangi" referes to the Tang dynasty and also honors Mr. Zhi-Lu Tang from the Institute of Vertebrate Paleontology and Paleoanthropology, Bejing for his numerous contributions to the research of dinosaurs.

Holotype: GSGM ZH (08)-04

Localty: Beside the G75 Highway, less than a kilometer from the quarries of Daxiatitan and Huanghetitan liujiaxiensis, which are all located in the southeastern part of the Lnzhou-Minhe Basin, Gansu Province, China.

Hroizon: Upper Hekou Group.


Age: Early Cretaceous.

Material: 3 teeth, 8 presacral verterae including 1 caudal cervical, 4 crainl dorsal, and 3 articulated middle dorsal vertebrae, 1 fragmentary rib, left scapulocoracoid, and right ulna and radius.