The Mendozan chinchilla rat is a rodent described from the highlands of Mendoza Province, Argentina. It has a grey-brown back and pale underside and feet; the paper’s confirmed locality is its type site at 3,000 m.
The back and upper tail are grey with some brown tint. The underside is greyish white, and white fur covers the feet and lower surface of the tail.
Where the first specimen was collected, it occurred among short grasses and low shrubs in high-Andean habitat. The paper said the ecology of this species complex had not yet been studied; it gives no diet or activity schedule.
An extinction-risk assessment has not been added yet.