Holotype: MACN-RN 166

Locality: West slope of Cerro Cuadrado, Arroyo Verde, Rio Negro Province, Patagonia, Argentina.

Horizon: Top of the Cerrito del Mamifero, middle section of the Los Alamitos Formation.

Biostratigraphy:

Age: Allenian Tetrapoda Assemblage, Late Campanian-Early Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: A complete crown of a left upper molar.

Hypodigm:

MACN-RN 167: A complete crown of a left upper molar.

MACN-RN 168: A complete crown of an upper right molar.

MACN-RN 169: An almost complete crown of a right upper molar.

MACN-RN 170: 2 right lower molars preserved in a jaw fragment.

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