Pyxicephalus americanus Duméril and Bibron, 1841 Hyperoodon asper Philippi, 1902 Ceratophrys argentina Philippi, 1902 Odontophrynus americanus (common names: common lesser escuercito, American ground frog) is a species of frog in the family Odontophrynidae.

It is tetraploid; diploid populations have been described as a new species, Odontophrynus cordobae.

It is a fossorial species, but during the breeding season, these frogs are found at shallow, temporary ponds and flooded areas.

Males can be heard calling at night from the edge of, or from within the water.

The species tolerates substantial habitat disturbance and no significant threats have been identified.