 With the continual decrease of the Spinifex hummock, the species’ territory also decreases and is now currently restricted to Eyre Peninsula in South Australia, and Great Victoria Desert covering South and Western Australia.It was first sighted in Northern Territory, but it has not been seen there since the late 19th century.Although the exact causes of the decline of the Sandhill Dunnart are not known, it is likely to be under threat from predation by introduced species such as foxes and cats, habitat degradation due to livestock grazing, and inappropriate fire regimes.