Species: schweitzerae BAILLEUL, O’CONNOR, ZHANG, LI, WANG, LAMANNA, ZHU & ZHOU, 2019
Etymology: In honor of Mary Higby Schweitzer for her ground-breaking works on MB and for her role in establishing the field of molecular paleontology.
Holotype: IVPP V25371
Locality: Near Changma Village, Yumen City, Gansu Province, northwestern China.
Horizon: Xiagou Formation.
Age: Lower-Middle Aptian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.
Material: An articualted partial skeleton with some feather traces, consisting of the caudal half of the axial column, pelvis, and the hind limbs.
Note: Has a crushed egg inits body cavity.
LAMANNA, YOU, HARRIS, CHIAPPE, JI, LU & JI, 2006
Locality: Area sourrounding the town of Changma, Changma Basin, northwestern Gansu Province, China.
Note: More precise locality information is available to qualified researches upon request.
Horizon: Xiagou Formation, lower unit of the Xinminpu Group.
Age: Aptian-?Albian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch, Early Cretaceous.
CAGS-IG-04-CM-007: A partially articulated appendicular skeleton consisting of a fragmentary pelvic girdle and largetly complete hind leg. Acetabular portion of right ilium and ischium and nearly complete pubes, distal half of left femur, nearly complete left tibiotarsus, proximal end of left fibula and complete left tarsometatarsus and pes, right complete femur and proximal half of the tibiotarsus.
Note: Possible feather impressions are preserved adjacent to the putative left femur.