Holotype:

Locality: Cubut Province, central Patagonia, Argentina.

Horizon: Bajo Barreal Formation.

Biostratigraphy:

Age: Cenomanian Stage, Uppermiddle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Smaller skeleton of a subadult: Cranial elements, dorsal vertebra, 2 dorsal ribs, 3 incomplete proximal-mid caudal vertebrae, manual phalanx ?II-2, incomplete manual ungual i-III, ?femur and ?fibula fragments, the distal end of metatarsal II and 2 fragmentary nonungual phalanges.

Larger skeleton: Manual unguals I and III, fragmentary femur and nearly complete fibula, distal end of metatarsal I, metatarsal II, several pedal phalanges, and indeterminate fragments.