Diprotodontia

Diprotodontia
Temporal range: Late Oligocene – Recent
Clockwise from upper left: female koala (Phascolarctos cinereus), mahogany glider (Petaurus gracilis), young eastern grey kangaroo (Macropus giganteus) and Sulawesi bear cuscus (Ailurops ursinus)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Clade: Eomarsupialia
Order: Diprotodontia
Owen, 1866
Suborders

Vombatiformes
Phalangeriformes
Macropodiformes

Diprotodontia (/dˌprtəˈdɒntiə/) is the largest extant order of marsupials, with about 155 species, including the kangaroos, wallabies, possums, koala, wombats, and many others. Extinct diprotodonts include the hippopotamus-sized Diprotodon, and Thylacoleo, the so-called "marsupial lion".