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:

WANG, O'CONNOR, LI, & YOU, 2015

GSGM-07-CM-006: Left proximal scapula, coracoid and partial left forelimb, with feather impressions.

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

CAGS-IG-04-CM-004: Nearly complete skeleton lacking cranium, cranial-midcervical vertebrae and both pelvic limbs.
Note: Has feathers on thoracic limbs.

BARDEN, WOGELIUS, LI, MANNING, EDWARDS & van DONGEN, 2011

MGSF317, 318: Two feathers.