''Phascolonus'' was a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of prehistoric Australian

marsupial Marsupials are any members of the mammalian infraclass Marsupialia. All extant marsupials are endemic to Australasia, Wallacea and the Americas. A distinctive characteristic common to most of these species is that the young are carried in a po ...

s in the

wombat Wombats are short-legged, muscular quadrupedal marsupials that are native to Australia. They are about in length with small, stubby tails and weigh between . All three of the extant species are members of the family Vombatidae. They are adap ...

family. The largest species, ''Phascolonus gigas'', weighed as much as 200 kg (450 lb). ''Phascolonus'' existed alongside an even larger marsupial, ''

Diprotodon ''Diprotodon'' (Ancient Greek: "two protruding front teeth") is an extinct genus of marsupial from the Pleistocene of Australia, containing one species, ''D. optatum''. The earliest finds date to 1.77 million to 780,000 years ago, but most speci ...

'', which weighed as much as three tons and was distantly related to wombats. Both disappeared at the end of the

Late Pleistocene The Late Pleistocene is an unofficial Age (geology), age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a Stratigraphy, stratigraphic perspective. It is intended to be the fourth division of ...

in a

Quaternary extinction event The Quaternary period (from 2.588 ± 0.005 million years ago to the present) has seen the extinctions of numerous predominantly megafaunal species, which have resulted in a collapse in faunal density and diversity and the extinction of key ecolog ...

together with many other large Australian animals. Phascolonus gigas

A two-million-year-old ''Phascolonus'' fossil was found alongside that of the crocodilian ''

Quinkana ''Quinkana'' is an extinct genus of mekosuchine crocodylians that lived in Australia from about 28 million to about 10,000 years ago. Most attributed specimens have been found in Queensland. It is speculated to have been one of the top predators ...

'' at Tea Tree Cave, near

Chillagoe, Queensland Chillagoe is a rural town and locality in the Shire of Mareeba, Queensland, Australia. In the the locality of Chillagoe had a population of 251 people. It was once a thriving mining town for a range of minerals, but is now reduced to a small z ...

References

* * * * Prehistoric vombatiforms Prehistoric mammals of Australia Prehistoric marsupial genera Pleistocene life Fossil taxa described in 1872 {{paleo-marsupial-stub