CARROLL, 1964

MCZ 2369

Locality: Halsell Hill Locality, Section 19, Halsell subdivision, Clay 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: Skull and fragments of both lower jaws, about 14 vertebrae with ribs and armour, portions of the shoulder girdle and front limbs.