Species: limbatus (COPE, 1877) ROMER & PRICE, 1940
Etymology:

Locality: "North Fork", Little Wichita River, Archer County, Texas.

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

Biostratigraphy: Land-vertebrate faunachron lower to upper B.

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

Material:

AMNH 4081: Skull and jaws formerly mounted on the Naosaurus skeleton.

FEMALE

Note: With a pathology on the dentary (COCHRAN & ANDERSON, 2026).

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Species: gigashomogenes CASE, 1907
Etymology:

Locality: Coffee Creek, Baylor County, Texas.

Horizon: Arroyo Formation, Lower Clear Fork Group.

Biostratigraphy: Land-vertebrate faunachron lower D.

Age: Middle Leonardian stage, upper Rotliegendes, Early Permian.

eferred material:

FMNH UC (old WM) 1134: Jaw, braincase, and postcranial material including at least fragments of all major bones or regions.

Note: Has pathologic neural spines (7 broken and healed) (REGA, NORIEGA, SUMIDA, HUTTENLOCKER, LEE & KENNEDY, 2012)

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REGA & NORIEGA, 2001

Locality: Baylor County, north central Texas.

Horizon:

Biostratigraphy:

Age: Early Permian.

Material:

Number: Not given: Isoalted fragment of a neural spine.
Note: Pathologic.