Species: ductrix O’CONNOR, STIDHAM, HARRIS, LAMANNA, BAILLEUL, HU, WANG & YOU, 2022
Etymology: Latin, ductrix, "female leader", in honor of Chang Meemann role as the first woman to serve as director of the IVPP (1984-1990), as a leader in her field in the study of fossil fish, and her role as mentor, role model, and inspiration to female scientist worldwide.

Holotype: IVPP V26198

Locality: Changman township, Yuman City, Jiuquan area, , Changma Prefecture,Yumen Municipality, northwestern Kansu (Gansu) Province, China.

Horizon: Xiagou Formation.

Biostratigraphy:

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

Material: Poorly preserved partial premaxillae and a possible maxilla an dquadrate, a few possible palatal elements, complete orbital region and braincase prepared free from teh sediment, nearly complete and articulated mandible, and partially articulated cervical and thoracic vertebrae preserved together with many small, unidentifiable, diarticulated fragments.