Genus: Similicaudipteryx HE, WANG & ZHOU, 2008
Etymology: Latin, similis, "similar" and Caudipteryx: The generic name referes to its similarity to Caudipteryx.

Species: yixianensis HE, WANG & ZHOU, 2008
Etymology: In reference to the fossily locality, Yixian of Liaoning Province.
= Genus: Nova WANG, JONES & EVANS, 2007

Holotype: IVPP V 12556

Locality: Near the village of Xierhuqiao, Yixian County, Liaoning County, China.

Horizon: Jiufotang Formation, Jehol Group.

Biostratigraphy:

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

Material: An incomplete individual with nearly complete hindlimbs and pelvis.

Referred material:

XU, ZHENG & YOU, 2010

Locality: Western Liaoning, China.

Horizon: Yixian Formation, Jehole group.

Biostratigraphy:

Age: Early Cretaceous.

Material:

STM4-1: Skull and skeleton of a juvenile.

Note: With feathers.

STM22-6: Fragmentary skeleton of an older juvenile.

Note: With feathers.