Genus: Lotosaurus ZHANG, 1975
Etymology: Latin, lotos, "lotus" and Greek, sauros, "lizard."

Species: adentus ZHANG, 1975
Etymology: Greek, a, "not, without, denoting absence" and Greek, denta, "teeth"; in reference to the jaw being toothless.

Holotype: IVPP 4881

Locality: Sangzhi County, western Hunan Province, China.

Horizon: Badong (Batung) Formation.

Biostratigraphy:

Age: Middle Triassic.

Material: Skull and skeleton.