Genus: Changchunsaurus ZAN, CHEN, JIN & LI, 2005
Etymology: In reference to 'Changchun', the capital of Jilin Province, China, where the specimen was found, and Greek, sauros, "lizard."

Species: parvus ZAN, CHEN, JIN & LI, 2005
Etymology: Greek, parvus, "petite," referes to the small size of the dinosaur.

Holotype: JLUM L0403-j -Zn2

Locality: Shanqian, Liufangzi, Gongzhulin city, Jilin Province, China.

Horizon: Quantou Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material: Complete skull and skeleton.

Referred material:

JLUM L0204-Y-23: A premaxilla that the left posterolateral process and the end of the dorsal process were broken.

JLUM L0204-Y-24: An almost complete right dentary.

CHEN, LeBLANC, JIN, HUANG & REISZ, 2018

Ya-C16071lel: Maxillary fragment.

Ya-C16072lel, Ya-C16073lel: Dentary fragments.

Ya-C16071la, Ya-C16071ld: Left dentaries.

Ya-C16071lb, Ya-C16071lc: Right dentaries.