Genus: Eocathayornis ZHOU, 2002
Etymology: Greek, eo, “dawn”, cathay, old poetic name for China and Greek, orni-, “bird”.
= Eocathayornis ZHOU, 1999 (nomen nudum)

Species: walkeri ZHOU, 2002
Etymology: In honor of C. A. Walker who first published and recognized the significance of the Enantiornithes.
= Eocathayornis walkeri ZHOU, 1999 (nomen nudum)

Holotype: IVPP V 10916 (part and counterpart)

Locality: Boluochi, Chaoyang County, Liaoning Province, Northwest China.

Horizon: Jiufotang Formation.


Age: Barremain Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch Early Cretaceous.

Material: Fragmentary skull, vertebrae, a pair of complete forelimbs, coracoids, scapulae, sternum and rib fragments.

Eocathayornis walkeri (modied from ZHOU, 2002), Holotype: IVPP V 10916