Holotype:

Locality: Candon Rio Seco, 2 km north of Rincon de los Sauces, Neuquen Province, Patagonia, Argentina.

Horizon: Rio Colorado Formation.

Biostratigraphy:

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

Material: Cervical, dorsal and caudal vertebrae, chevrons, scapula, coracoids, humerus, pubis, ilium, femur and metacarpals.