[3] The cracking-clay Pilbara planigale has a maximum recorded body weight of 6.1 g and snout-vent length of 62.5 mm for males.

[3] Like all planigales, it is carnivorous, living on invertebrates and small vertebrates which they catch by energetic nocturnal hunting through leaf litter and in soil cracks.

By night, planigales are active and fearless hunters, preying mostly on insects and their larvae, small lizards, and young mammals almost as large as itself.

Specimens collected in October and November have extended nipples and more prominent pouch due to a better developed antero-lateral skin fold.

Compared to the co-occurring orange-headed Pilbara planigale (P. kendricki), it is less likely to occur in habitats with abundant rocky outcrops.