This burrowing rodent has cinnamon fur. In study sites in west-central Buenos Aires Province, it occupied sparsely vegetated dunes, dug burrows, and made brief surface trips to forage.
The back is cinnamon-colored; the mid-back can be darker. The crown and muzzle are blackish, and the underside is dull buff.
In study sites in west-central Buenos Aires Province, the species was restricted to moderately fixed dunes with sparse vegetation and friable sandy soil. It maintained burrow systems and made brief surface excursions to forage.
An extinction-risk assessment has not been added yet.