Holotype:

Locality: Neuquen Province, Argentina.

Horizon: Portezuelo Formation, Upper Rio Neuquen Subgroup, Middle Neuquen Group.

Biostratigraphy:

Age: Neuquenian Tetrapoda Assemblage, Upper Turonian or Coniacian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Early Late Cretaceous.

Material: Teeth, cervico-dorsal vertebrae, 1 dorso-sacral vertebrae, fused sacrals, caudal vertebrae
complete right ilium, fragmentary left ilium, prxomal end of the pubis, distal end of the ischium, ribs.
Note: Pathologies.