Genus: Fabanychus SODANO, KILGMAN, MARSH, PRITCHARD, STOCKER, PARKER, GONCALVES & NESBITT, 2025
Etymology: Latin,faba, "bean" and Greek, onyx, "claw."

Species: monos SODANO, KILGMAN, MARSH, PRITCHARD, STOCKER, PARKER, GONCALVES & NESBITT, 2025
Etymology: Greek, monos, "alone." Referring to how all teh specimens found to date have been isoalted.

Holotype: PEFO 5066

Locality: PFV 89 (Bowman locality), Petrified Forest National Park, Navajo County, Arizona.

Horizon: Sonsela Member, Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Revueltian, Early Norian Substage, Early Norian Epoch, Middle Late Triassic Epoch, Late Triassic.

Material: Manual ungual, probably from digit II.

Paratypes:

PEFO 42094, 55064, 50563, 50564, 50565: Isolated manual unguals.

Referred material:

Locality: DMNH 2018-05, east of Petrified Forest National Park, Navajo County, Arizona.

Horizon: Green Layer, Sonsela Member, Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Revueltian, Early Norian Substage, Early Norian Epoch, Middle Late Triassic Epoch, Late Triassic.

Material:

DMNH PAL 2018-05-0148: Isolated ungual.

 

Locality: MOTT 3898-2 ("Headquarters site"), Garza County, Texas.

Horizon: Middle unit, Cooper Canyon Formation.

Biostratigraphy:

Age: Revueltian, Early Norian Substage, Early Norian Epoch, Middle Late Triassic Epoch, Late Triassic.

Material:

TTU-P24823: Isolated manual ungual.