Genus: Liaotherium ZHOU, CHENG & WANG, 1991
Etymology: In reference to the Liaoning Province, China, where the specimen was found, and Greek, therion, "beast."

Species: gracile ZHOU, CHENG, & WANG, 1991
Etymology: Latin, gracile, "slender."

Holotype: Geological Museum of China, V2006

Locality: Fangshen, Lingyuan County, approximately 41'N, 119'05"E, Liaoning Province, China.

Horizon: Jiulongshan Formation.


Age: Middle Jurassic.

Material: Right mandible with the last molar (Lm5?)