Species: conemaughensis ROMER, 1963
Etymology:

Holotype: USNM 20636

Locality: SW 1/4, SE 1/4, SE 1/4, sec.24, Wayne Township, 10 miles directly west of Steubenvile, Jefferson County, Ohio.

Horizon: Conemaugh group.

Biostratigraphy:

Age: Wolfcampanian stage, Upper Lower to Lower Middle Rotliegendes Epoch, Early Permian.

Material: Fragmentary skull and lower jaw.

Referred material:

Centra and rib fragments.

 

Locality: Summerfield limestone, near Reed Mills, Jefferson County, Ohio.

Horizon: Middle Stephanian.

Biostratigraphy:

Age: Upper Kasimovian-Lower Gzelian Epoch, Late Pennsylvanian.

Material:

Number: Not given: ?Centrum.

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Species: relictus ROMER, 1963
Etymology:

Holotype: MCZ 2353

Locality: 2 1/2 miles north and 1/2 mile east of Graham, Young County, Texas.

Horizon: Thirfty Formation, Cisco Group.

Biostratigraphy:

Age: Late Pennsylvanian.

Material: 2 jaw fragments and centrum.

Referred material:

Locality: 'Prideaux pocket', Archer County, Texas.

Horizon: ?Pueblo Formation.

Biostratigraphy:

Age: Lower Wichtia Group, Wichita Group, Leonardian stage, Upper Rotilegendes Epoch, Early Permian.

Material:

Number: Not given: ?A few centra.