Species: ponderosa OLSON, 1962
Etymology:
Holotype: FMNH (CNHM) UR 247
Locality: Loc. KV, MacFayden Ranch, (North), Knox County, Texas.
Horizon: Flowerpot Member, Upper San Angelo Formation, Lower Pease River Group.
Biostratigraphy: Land-vertebrate faunachron lower E.
Age: Lower Guadalupian Stage, Upper Rotliegendes Epoch, Early Permian.
Material: Sacrum, pelvis, scapulo-coracoid, parts of vertebrae and ribs.
Paratype:
FMNH (CNHM) UR 248: Femur, humerus, 1 vertebra, zigomatic part of skull and
fragments.