Holotype:

Locality: Sierra del Portezuelo, Neuquen Province, Argentina.

Horizon: Rio Neuquen Formation.

Biostratigraphy:

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

Material: A foot of a large troodontid.