Holotype:

Locality: Loma de La Lata, Neuquen Province, Argentina.

Horizon: Rio Colorado Formation.

Biostratigraphy:

Age: Coloradoan Tetrapoda Assemblage, Santonian-Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Femora, pubis, 3 caudal vertebrae, anterior and medial.