Genus: Zatrachys COPE, 1878
Etymology:

Species: serratus COPE, 1878
Etymology:
= Aspidosaurus serratus (COPE, 1881) WATSON, 1919

Holotype: Lost.

Neotype: AMNH 4587

Locality: Unknown, Texas.

Horizon: Wichita Group.

Biostratigraphy:

Age: Early Permian.

Material: Fragmentary skull.

Referred material:

BERMAN, 1993

Locality: Arroyo de Agua Locality, New Mexico.

Horizon: Upper Cutler Formation.

Biostratigraphy:

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

Material:

Number: Not given:

 

 

CANTRELL, SUAZO, BERMAN, SPIELMANN, LUCAS, HENRICI & RINEHART, 2013

Locality: Gallina Wash locality (NMMNH locality 4668, CM locality 1057), Joyita Hills region, approximately 20 km northeast of Socorro, central Socorro County, New Mexico.

Horizon: Scholle Member, Lower Abo Formation.

Biostratigraphy:

Age: Middle Wolfcampian State (Coyotean or Seymouran age), Lower Rotliegendes Epoch, Early Permian.

Material:

CM 38007: Right powterior portion of skull and mandible.

 

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 33435: Fragmentary skull and left mandible.

UCMP 34154: Skull.

UCMP 34156: Fragmentary skull table.

UCMP 34157: Skull, jaws and 5 articulated anterior trunk vertebrae and attached ribs.

UCMP 34158: Small skull.

UCMP 34159: Posterior part of skull table and cheek region.

UCMP 34160: Right mandible.

UCMP 34161: Posterior part of skull and fragmentary rostrum.

UCMP 34163: Skull lacking rostrum.

UCMP 34165: Skull and jaw.

UCMP 34167: Skull, jaw and several anterior trunk vertebrae and ribs.

UCMP 34169: Skull and jaw.

UCMP 34170: Skull, jaw and associated gular scales.

UCMP 34172: Fragmentary skull.

UCMP 34178: Skull.

UCMP 34179 Left mandible.

UCMP 34180: Small skull.

UCMP 40030: Quadrate region of skull.

UCMP 35008: Skull, jaw and several trunk vertebrae and ribs.

Unnumbered: Weathered right mandible.

 

Locality: Camp Quarry, V-2814, southeast slop of Loma Salazar about 125 feet from top, Rio Arriba County, New Mexico.

Horizon: Abo Formation.

Biostratigraphy:

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

Material:

UCMP 40028: Fragmentary and macerated skull and left mandible.

 

Locality: Vander Hoof Quarry, V-2843, 465 yards S65'W of Loma Salazar and only 150 yards from the Welles quarry, Rio Arriba County, New Mexico.

Locality:

Biostratigraphy:

Age: Early Permian.

Material:

UCMP 41103: Fragmentary skull.

 

OLSON, 1967

Locality: Byars Site, SW 1/4, SW 1/4, sec. 33, T5N, R2E, McClain County, Oklahoma.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

OUSM 2-0-S15: Skull and jaws.

 

SANDER, 1989

Locality: Archer City Bonebed 1, Archer County, Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: Fragments.

 

Locality: Archer City Bonebed 2, Archer County, Texas.

Horizon: Upper Archer City Formation (formerly Putnam Formation, Wichita Group), upper Bowie Group.

Biostratigraphy: Land-vertebrate faunachron upper A.

Age: Wolfcampanian stage, Lower Rotliegendes Epoch, Early Permian.

Material:

Number: Not given: Skull fragments.

 

Locality: Rattlesnake Canyon Bonebed 2, Archer County, Texas.

Horizon: Nocona Formation (formerly lower to lower upper Admiral Formation, middle Wichita Group), Lower Wichita Group.

Biostratigraphy: Land-vertebrate faunachron lower B.

Age: Upper Wolfcampanian stage, Upper Rotliegendes Epoch, Early Permian.

Material:

Number: Not given: Quadratojugular spikes.

 

URBAN & BERMAN, 2007

Locality: Road cut at the intersection of Route 7 and Delta Road 48 to Brave, Pennsylvania, west of Blacksville, Monogalia County, West Virgina.

Horizon: Washington Limestone Member, Washington Formation, Dunkard Group.

Biostratigraphy:

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

Material:

CM 25654: Left posterior half of skul-roof table that includes the parietal, postparietla, post frontal, postorbital, supratemporal, tabular, and partial squamosal.

 


Locality: Road cut at the intersection of Dallas Pike and Interstate 70, Ohio County, West Virgina.

Horizon: Greene Formation, Dunkard Group.

Biostratigraphy:

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

Material:

CM 25655: Left quadratojugal, portion of left upper jaw margin with teeth and unidentifiable cranial material.

 

Locality: Road cut on County Highway 41/8, 0.1 mile east of the intersection of Dallas Pike and Interstate 79, Ohio County, West Virgina.

Horizon: Upper Dallas Member, Greene Formation, Dunkard Group.

Biostratigraphy:

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

Material:

CM 25656: Isolated left tabular spine.

 

Locality: Interstate 70 road cut 3/4 mile east of Elm Grove, Ohio County, West Virgina.

Horizon: Benwood Limestone Member, Pittsburgh Formation.

Biostratigraphy:

Age: Virgilian Stage, Late Pennsylvanian Sub-period, Late Carboniferous Period.

Material:

CM 25659: Partial quadratojugal, isolated left tabular spine and unidentifiable cranial material.