It was a medium-sized, heavily built, ground-dwelling, quadrupedal herbivore, that could grow up to long and weighed about , nearly a ton. Like other ankylosaurs it had heavy armour and a club on its tail, making much of its mobility slow. "Talarurus" is classified as a member of the Ankylosauria, in the Ankylosaurinae, a group of derived ankyosaurs. Talarurus is known from the Bayan Shireh Formation, being likely niche partitioned with "Tsagantegia", as indicated by its muzzle, which has a rectangular shape specialized for grazing. These represent the oldest known ankylosaurines from Asia, although they are not very closely related to each other. It appears that the closest relative of "Talarurus" was "Nodocephalosaurus", an ankylosaurin with similar facial osteoderms.