Species: agyrus BERMAN, EBERTH & BRINKMAN, 1988
Etymology:

Holotype: CM 38023

Locality: 82.5 m n 58' east of the Camp quarry, Rio Puerco drainage, SW 1/4, NE 1/4, NE 1/4, sec. 8, T22N, R3E, about 1.1 km southeast of Arroyo del Agua, Rio Arriba County, north-central New Mexico.

Horizon: Lower Cutler Formation.

Biostratigraphy:

Age: Virgilian, Gzelian Epoch, Late Pennsylvanian or Wolfcampian, Lower Rotliegendes Epoch, Early Permian.

Material: Skull and tightly closed jaws.

Paratypes:

CM 27559: Fragmentary skull.

CM 27574, 28582, 28584, 34100, 34901, 41715, 41716, 41717, 41720, 41723: Skulls.

CM 28581: Fragmentary skull with long series of vertebrae and articulated pelvic girdle, femora, and right tibia with part of pes closely associated.

CM 28583: Fragmentary articulated skeleton that includes skull, first five vertebrae, scapulocoracoids, interclavicle, clavicles, left humerus, and dermal plates associated with shoulder girdle.

CM 28585: Several series of vertebrae with associated ribs.

CM 33998: Small portion of skull showing mainly anterior part of plate.

CM 339999: Small portion of skull showing mainly anterior portion of palate.

CM 34902: Series of five vertebra and right scapulocoracoid and articulated distal end of humerus with small patch of dermal plates.

CM 34903: Two series of four and seven vertebrae.

CM 41718: Small portion of skull showing mainly posterior part of palate.

CM 41719: Portion of skull showing mainly posterior half of left side of dermal roof.

CM 41721: Greater part of skeleton that includes skull, long series of trunk vertebrae, articulated right scapulocoracoid, humerus, radius, ulna and fragments of carpus, patches of dermal plates associated with
shoulder girdle.

CM 41722: Fragmentary skull showing mainly the roof.

CM 41723: Skull articulated with first seven vertebrae.

Note: Most skulls have tightly closed lower jaws.