Species: cordatus COPE, 1881
Etymology:

Holotype: AMNH 4330, & AMNH 4331

Locality: Big Wichita River, Texas.

Horizon: Whicta Group.

Biostratigraphy:

Age: Leonardian stage, Upper Rotilegendes Epoch, Early Permian.

Material: 2 skulls.

Referred material:

CARROLL 1968

Locality: Archer City Bone Bed, Archer City, 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:

MCZ 3302: Anterior portion of skeleton articulated with skull, including vertebral column and ribs, pectoral girdle and forelimbs, dermal armor.

 

Locality: Mitchell Creek, Baylor County, Texas.

Horizon: Lower to middle Waggoner Ranch Formation (formerly Clyde Formation, upper Wichita Group) Upper Wichita Group.

Biostratigraphy: Land-vertebrate faunachron lower to middle C.

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

Material:

UC 1069: Vertebrae, ribs, pectoral and pelvic girdle and limb elements of several individuals associated with 2 fragmentary skulls, dermal plates.

 

Locality: Zott Pasture, southwest corner, section 55, block 3, Clark & Plumb Survey, 3 miles north of Windthorst, 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:

UT 40001-1: Vertebral column, ribs, pectoral and pelvic girdles and real limb, skull.

UT 40001-6: Skull, vertebral column, pectoral girdle, and for-limb.

UT 40001-7: Skull, vertebral column, some limb, and girdle material.

UT 40001-8: Disarticulated remains of other individuals.

 

COPE, 1895

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: 2 fragmentary skulls.

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Species: coicodus COPE, 1895
Etymology:

Holotype: AMNH 4336

Locality: Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material: Anterior half of a skull.
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Species: tryptichus CUMMINS, 1908
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material: