Genus: Hagryphus ZANNO & SAMPSON, 2005 (published in 2006)
Etymology: From Ha, the ancient Egyptian God of the western desert, and Latin, gryphus, a fabulous four-footed bird, gender, masculine.

Species: giganteus ZANNO & SAMPSON, 2005 (published in 2006)
Etymology: Latin, giganteus, "huge."
= Genus: Nova ZANNO & SAMPSON, 2003

Holotype: UMNH VP 12765

Locality: Grand Staircase-Escalante National Monument, Kane County, Southern Utah.

Horizon: Kaiparowits Formation.

Biostratigraphy:

Age: Judithian age, Late Campanian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Nearly complete articulated left manus, and articulated pedal phalanx and ungual and a series of associated but damaged pedal elements and distal elements.