Genus: Zhanghenglong XING, WANG, HAN, SULLIAN, MA, HE, HONE, YAN,
DU & XU,
Etymology: "Zhangchen" is derived from the full name of Mr. Zhang Heng, a famous Chinese astronomer, mathematician, inventor, poet, and stesman who lived during the Eastern Han Dynasty (AD 25-220) of China. The figure was born in the outskirks of Nanyang in southwestern Henan Province, quite close to the Xixia Basin. The word "long" is direct transliteration of Mandarin Chinese word that means dragon.
WANG, HAN, SULLIAN, MA, HE, HONE, YAN, DU & XU,
Etymology: The specific name is derived from a large administrative region called Yangchen that was established in the Spring and Autumn period (BC 770-403) of the Eastern Zhou Dynasty of China. The ancient administrative region included what is now southwestern Henan Province.
Holotype: XMDFEC V0013
Locality: Zhoujiagou Village, about 5 km northeast of Sanlimiao Village where the Xixia Dinosaur Relics Park is located, Xixia Basin, Xixia County, Henan Province, China.
Horizon: Middle Member, Majiacun Formation.
Age: Santonian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.
Material: An incomplete, disarticulated cranium, including the nearly complete right maxilla, as well as the partial right jugal and dentary.
Paratype: XMDFEC V0014: A partial, disarticulated postcranial skeleton, including five anterior-middle dorsal vertebrae (some of which lack the dorsal portion of the neural spine), fragments of the dorsal ribs, and the nearly complete right scapula.