BONAPARTE 1989

Locality: Rio Negro Province, Argentina.

Horizon: Los Alamitos Formation.

Biostratigraphy:

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

MACN-RN 242, MACN-RN 243: Anterior premolars.