The Marmoset Xanthurus Rat occurs on Sulawesi, Indonesia. Compared with the related Rattus xanthurus, descriptions report grayer upper fur with longer, softer underfur.
Compared with R. xanthurus, its upper parts are grayer, its underfur is longer, softer, and thicker, and its guard hairs are shorter.
In a ground-dwelling small-mammal survey in Lore Lindu National Park, central Sulawesi, it made up 15.2% of rodent captures.
An extinction-risk assessment has not been added yet.