Species: yumenensis HOU & LIU, 1984
Etymology:

Holotype: IVPP V 6862

Locality: Northwest of the village of Chenjiawan, Changma Prefecture,Yumen Municipality, Kansu (Gansu) Province, China.

Horizon: Middle Xiagou Formation.

Biostratigraphy:

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

Referred material:

LI, ZHANG, ZHOU, LI, LIU & WANG, 2011

IVPP V 15083, 15084, 15080, 15074, 15077: Hind limb elements with skin impressions between the toes.

YOU, LAMANNA, HARRIS, CHIAPPE, O'CONNOR, JI, LU, YUAN, LI, ZHANG, LACOVARA, DODSON & JI, 2006

CAGS-IG-04-CM-008: Partial pelvic limbs with soft-tissue preservation.
Note: Tubercular soft tissue preserved around toes.