Dasyuromorphia is an order of mammals comprising most of the Australian carnivorous marsupials. Members of this order are called dasyuromorphs, and include quolls, dunnarts, the numbat, the Tasmanian devil, and the extinct thylacine. They are found in Australia and New Guinea, generally in forests, shrublands, and grasslands, but also inland wetlands, deserts, and rocky areas. They range in size from the southern ningaui, at 4 cm (2 in) plus a 4 cm (2 in) tail, to the Tasmanian devil, at 80 cm (31 in) plus a 30 cm (12 in) tail, though the thylacine was much larger at up to 195 cm (77 in) plus a 66 cm (26 in) tail. Dasyuromorphs primarily eat invertebrates, particularly insects and arthropods, though most will also eat small lizards or other vertebrates. As the two largest species in the order, Tasmanian devils instead eat carrion of larger mammals in addition to insects, and the thylacine ate larger mammals and livestock. Most dasyuromorphs do not have population estimates, but the ones that do range from 700 to 100,000. The eastern quoll, northern quoll, dibbler, Tasmanian devil, and numbat are categorized as endangered species, while the thylacine was made extinct in 1936.
The seventy-two extant species of Dasyuromorphia are divided into two families: Dasyuridae, containing seventy-one species divided between the thirteen genera in the subfamily Dasyurinae and the four genera of the subfamily Sminthopsinae; and Myrmecobiidae, containing the numbat. There is additionally the family Thylacinidae, containing the extinct thylacine. Dozens of extinct Dasyuromorphia species have been discovered, though due to ongoing research and discoveries the exact number and categorization is not fixed.[1]