Species: boweni WELLES, 1947 (nomen dubium)
Etymology:

Holotype: UCMP 36221

Locality: Holbrook quarry, UC V-3922, on Highway 66, 6 miles west of Holbrook, immediately west of Geronimo Trading post, Apache County, Arizona.

Horizon: Holbrook Member, Moenkopi Formation.

Biostratigraphy:

Age: Ansian Stage, Lower Mid Triassic Epoch, Early Middle Triassic.

Material: Anterior half of the mandibular ramus.

Referred material:

UCMP 37825: Sphenethmoid region.

UCMP 37763: Atlas.

UCMP 37764, 37765, 37766, 37767, 37768, 37769: Intercentra.