Genus: Sinodelphys LUO, JI, WIBLE & YUAN, 2003
Etymology: Latin, sino, "China" and Greek, delphys, "uterus, womb," commonly used suffix for marsupial taxa.

Species: szalayi LUO, JI, WIBLE & YUAN, 2003
Etymology: In honor of F. S. Szalay for his studies of metatherian evolution.

Holotype: CAGS00-IG03

Locality: Dawangzhangzi locality, Lingyuan County, Liaoning Province, China.

Horizon: Horizon II, Yixian Formation, Jehol Group.

Biostratigraphy: Psittacosaurus fauna, Liaoxiornis Avifauna.

Age: Lower Hautervian Stage, Uppermost Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Nearly complete specimen.
Note: Has costal cartilages and fur/hair impressions.

Referred material:

AZUMA, 2005

Locality: Western Liaoning Province, China.

Horizon: Yixian Formation, Jehol Group.

Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.

Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.

Material:

JI-38: Skull and skeleton with hair impressions.