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.