Genus: Pachagnathus MARTINEZ, ANDRES, APALDETTI & CERDA, 2022
Etymology: Aymara (native American language spoken by the Aymara people of the Andes), pacha, "earth" and Latin, gnathus, "jaws."

Species: benitoi MARTINEZ, ANDRES, APALDETTI & CERDA, 2022
Etymology: In honor of Benito Leves, inhabitant of the small town Balde de Leyes, who found the first fossils in Balde de Leyes localtiy and guided RNM and this team to the site.

Holotype: PVSJ 1080

Locality: 'Quebrad del Puma' Locality, Caucete Department, San Juan Province, Argentina.

Horizon: Corresponds to the Quebrada del Barro Formation.


Age: Upper Norian to Rhaetian Stage, Late Triassic Epoch, Late Triassic.

Material: Partial mandibular symphysis lacking anterior end, preserving 1 tooth (lacking the apex) and 3 alveoli from the left side, and the roots of 3 teeth and 2 alveolie from the right side.