Species: superbus LYDEKKER, 1893
Etymology: Latin, superbus, “excellent, proud."

Holotype: MLP 77-V-29-1

Locality: Left bank of the Rio Chico, Cerca de Pampa Pelada, North east of Colhue Huapi, Chubut Province, Patagonia, Argentina.

Horizon: Bajo Barreal Formation, Chubut Group.

Biostratigraphy:

Age: Campanian-Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Left humerus, radius, ulna, 2 carpus (now lost) and 5 metacarpals.

Referred material:

BONAPARTE & GASPARINI, 1978

Locality: Orilla orental del lago Colhue-Huapi, Chubut Province, Patagonia, Argentina.

Horizon: Castillo Member, Bajo Barreal Formation, Chubut Group.

Biostratigraphy:

Age: Early Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Anterior caudal vertebra.

 

Locality: Unknown, "Region del Neuquen", Argentina.

Horizon: Unknown.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: 2 caudal vertebrae.

 

Locality: Rio Neuquen, Province of Neuquen, Argentina.

Horizon: Bajo de la Carpa Formation, Lower Rio Colorado Subgroup, Upper Neuquen Group.
(was Bajo de La Carpa Member, Rio Colorado Formation, Neuquen Group.)

Biostratigraphy:

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

Material:

Number: Not given: Fragmentary femur.

 

Locality: Sierra de San Bernardo, 45 km east of Colonia Sarmiento, Chubut Province, Patagonia, Argentina.

Horizon: Bajo Barreal Formation, Chubut Group.

Biostratigraphy:

Age: Early Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Femur.

 

Locality: Unknown, probably Neuquen Province, Argentina.

Horizon: Unknown.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Museo Nacional de Buenos Aires, Cajon 222, no de Catalogen 5017: Humerus of a juvenile.

 

 

Locality: Margena, cerca de Colon, Entre Rios Province, Uruguay.

Horizon: Asencio Formation?

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Humerus.

 

Locality: Viedma, Santa Cruz Province, Argentina.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Caudal vertebrae

 

HUENE, 1929

Locality: Colhue Huapi, Chubut Province, Patagonia, Argentina.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Proximal caudal vertebrae.

 

Locality: Neuquen Province, Argentina.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Museo de La Plata: Caudal vertebrae.

 

Locality: Yacimientos Sierra San Bernardo, 25 km east of Sarmiento, Chubut Province, Patagonia, Argentina.

Horizon: “San Jourge Formation”, Chubut Group.

Biostratigraphy:

Age: Early Senonian Subepoch?, Gulf Epoch, Late Cretaceous.

Material:

FMNH-P 13019 (= P 13326), 13018: Right femora.

FMNH-P 13020 (= 13436): Left tibia.

 

HUENE, 1929

Locality: Baches La Lancha, Southwest of Palmitas, Uruguay.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Coll. Berro: Distal end of a humerus, half a radius, and rib fragment.