Holotype:

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

Horizon: Kaiparowits Formation.

Biostratigraphy:

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

Material: Syncervical, 11 post-syncervical vertebrae, 3 cervical ribs, 18 dorsal ribs, partial undetermined leg bones and 9 undertemind bones.