Genus: Lanzhousaurus YOU, JI & LI, 2005
Etymology: Chinese, Lanzhou, name of the captial city of Gansu Province, P. R. China, and Greek, sauros,''lizard."
Species: magnidens YOU, JI & LI, 2005
Etymology: Laitn, mangus, "big," and Latin, dens, "tooth"; Big tooth.
Locality: Zhongpu, Lintao, Kansu (Gansu) Province, China.
Horizon: Hekou Group.
Age: Early Cretaceous.
Material: Mandibles, missing predentary, right coronoid and right articular, isolated maxillary teeth, issolated right dentary teeth and complete, in situ left dentary teeth, 6 cervicals and 8 dorsal vertebrae, both sternal plates, ribs, and both pubes.