Genus: Maotherium ROUGIER, JI, & NOVACEK, 2003
Etymology: Mao for Chinese (Pinyin) fur, and Greek, thorium, beast.

Species: sinensis ROUGIER, JI & NOVACEK, 2003 JI, 2002
Etymology: Sinensis latinzed adaptation for sino, nearly from China.
= Symetrodontia nova JI, 2002

Holotype: NGMC 97-4-15.

Locality: Sihetun Village, near the town of Shangyuan (Shangyuanzhen), Beipiao City (Beipiaoshi), Liaoning Province, China.

Horizon: Lower Yixian Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material: Skull, skeleton, soft tissue and hair.