Genus: Sinopterus WANG & ZHOU, 2003
Etymology: Latin, Sinae, " China" and Greek, pterus, "wing."

Species: dongi WANG & ZHOU, 2003
Etymology: In honor of Dong Zhi-Ming.

Holotype: IVPP V13363

Locality: Lamagou, Dongdadao, Chaoyang, Liaoning Province, China.

Horizon: Horizon IV, Jiufotang Formation, Upper Jehol Group.

Biostratigraphy: Psittacosaurus fauna, Cathayornis-Chaoyanga Avifauna.

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and nearly complete skeleton.

Referred material:

= Sinopterus gui LI, LU, & ZHANG, 2003
Etymology: In honor of vertebrate paleontologist of Lanzhou University, Professor Gu Zugang.

Holotype: BPV-077

Locality: Chaoyang City, Liaoning Province, China.

Horizon: Horizon IV, Jiufotang Formation, Upper Jehol Group.

Biostratigraphy: Psittacosaurus fauna, Cathayornis-Chaoyanga Avifauna.

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and nearly complete skeleton.

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Species: lingyuanensis LÜ, TENG, SUN, SHEN, LI, GAO, & LIU, 2016
Etymology: In reference to Lingyuan County, Liaoning Province, China, where the specimen was found.

Holotype: JP-2014-005

Locality: Sihedang, Lingyuan County, Liaoning Province, China.

Horizon: Jiufotang Formation.

Biostratigraphy:

Age: Aptian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and nearly complete skeleton.