Genus: Longicrusavis O’CONNOR, GAO & CHIAPPE, 2010
Etymology: Latin, longi, "long," Latin, crus, "shin" and Latin, avis, "bird": 'long shin bird', refers to the elongate hindlimb and, in particular, tibotarsus that characterizes the taxon and the Hongshanornithidae in general.

Species: houi O’CONNOR, GAO & CHIAPPE, 2010
Etymology: In honor of Lianhai Hou in recognition of his contribution to avian paleontology of the Jehol Group.

Holotype: PKUP V1069

Locality: Dawangzhangzi near Lingyuan, Liaoning Province, China.

Horizon: Yixian Formation.


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

Material: Skull and skeleton.

Longicrusavis houi (modified from O’CONNOR, GAO & CHIAPPE, 2010), Holotype: PKUP V1069.