They move with great speed and agility when observed, with a forward leaning posture and a bushy tail that arches over the back.

[3] The animal has also lent its name to the music rock group from the area, Nabarlek[citation needed] and Gwendolyne Stevens' uranium mine.

The cheek is marked with a whitish stripe from the eye to the nostrils, a lighter tone that contrasts with the blackish parts of the snout.

[8] Nabarlek is often found with the similar P. brachyotis, whose coloration is more variable, and a young individual may be indistinguishable from this species in field observations.

[11] Nabarlek move quickly with a distinctive horizontal posture, the tail curled toward the middle of the back with raised hairs in the tufty end.

The species will range several hundred metres from its secure position, foraging in the surrounding black soil terrain, this contrasts with the less venturous behaviour of the short-eared P.

[8] The discrete and cautious nature of narbarlek makes capture of specimens difficult, they are regarded as 'trap-shy' in attempts to survey their population.

[8] Attempts to locate the high silica fern in later surveys have not recorded Marsilea crenata at any sites, and the complex relationship between diet and dentition remains to be examined.

[7] The habitat is usually scrubby vegetation over sandstone formations, granitic outcrops, breakaways of laterite, boulder piles and rocky slopes.