Class Mammalia Linnaeus, 1758 - mammals
Subclass Theria Parker & Haswell, 1897
Order Dasyuromorphia Gill, 1872
Family Dasyuridae Goldfuss, 1820 - marsupial "mice" and "cats", and Tasmanian devil
Subfamily Sminthopsinae Archer, 1982
Tribe Planigalini Archer, 1982
Genus Planigale Troughton, 1928 - flat-skulled marsupial "mice"
Planigale ingrami (Thomas, 1906) - long-tailed planigale
1 [Planigale ingrami ingrami]ᵀ (Thomas, 1906)
2 Planigale ingrami brunnea Troughton, 1928
3 Planigale ingrami subtilissima (Lönnberg, 1913)