Species: milleri MEHL, 1913
Etymology:

Holotype: FMNH UC670

Locality: Poleo Creek, near the Miller bone bed, in the vicinity of the village of Arroyo del Agua, Rio Arriba County, north-central New Mexico.

Horizon: El Cobre Canyon Formation.

Biostratigraphy:

Age: Wolfcampian Stage, Lower Rotliegendes Epoch, Early Permian.

Material: Skull.

Referred material:

WILLISTON, 1918

FMNH UC155: Fragmentary skull.

BERMAN, 1993

Locality: El Cobre Canyon Locality, 8 km northwest of the small village of Abiquiu, Rio Arriba County, New Mexico.

Horizon: Upper Cutler Formation.

Biostratigraphy:

Age: Wolfcampian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

Number: Not given.

LANGSTON, 1953

Locality: Welles quarry, V-3428, 375 yards S.51W of Loma Salazar, near Arroyo de Agua, Rio Arriba County, Northeastern New Mexico.

Horizon: Upper Cutler Formation.

Biostratigraphy:

Age: Wolfcampian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

UCMP 33439: Skull and attached mandible.

UCMP 34168: Fragmentary right and left mandibles.

UCMP 34174: Skull of a juvenile.

 

REISZ, BERMAN & HENRICI, 2005

Locality: About 100 m west of the Morhin bonebed locality, Rio Arriba County, north-central New Mexico.

Horizon: El Cobre Canyon Formation.

Biostratigraphy:

Age: Wolfcampian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

USNM 34909: Skull.

 

= Chenoprosopus cf. C. milleri VAUGHN, 1963

Locality: Arroyo del Agua, Rio Arriba County, New Mexico.

Horizon: Upper part of the El Cobre Canyon Formation.

Biostratigraphy:

Age: Wolfcampian Stage, Lower Rotliegendes Epoch, Early Permian.

Material:

CM 47798 (formerly UCLA VP 1640): Dermal roof and palatal elements of the left narial region.

= Chenoprosopus lewisi HOOK, 1993
Etymology: In honour of Arnold D. Lewis. Since his first trip to north-central Texas with the late Alfred S. Romer in 1954, Arnie’s extraordinarily collecting talents and preparation skills have enhanced greatly our knowledge of late Paleozoic vertebrates.

Holotype: USNM 437646

Locality: Approximately 2 km west of Shannon, Clay County, Texas. UTM 14SNN66740346, Antelope 7.5’ topographic quadrangle.

Horizon: Markley Formation, Bowie Group.

Biostratigraphy:

Age: Permo-Carboniferous.
Note: Approximately 2.5 m below the base of informal sandstone member 13, Markley Formation, Bowie Group, of Hentz and Brown, (1987): Pueblo Formation, Wichita Group, of Romer(1974). Virgilian-Wolfcampian Boundary interval, Permo-Carboniferous.

Material: A nearly complete skull and associated postcranial elements.