Phascolonus fossil map
Where fossils of Phascolonus have been found, shown on the Earth as it looked about 0 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 0 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

| Group | Early mammals |
|---|---|
| Lived | 5.333–0.0117 million years ago (Zanclean to Late Pleistocene) |
| Periods | Neogene, Quaternary |
| Family | Vombatidae |
| Named by | Owen 1872 |
| Fossil records | 26 occurrences at 11 locations (PBDB) |
| Found in | Australia |
| Rock formations | txn:40179, Allingham, Katipiri, Wyandotte |
About Phascolonus
Phascolonus is an extinct genus of giant wombat known from the Pliocene and Pleistocene of Australia. There is only a single known species, Phascolonus gigas, the largest wombat ever known to have existed, estimated to weigh as much as 200 kg (450 lb) or 360 kg (790 lb). It was described by Richard Owen in 1859. Phascolomys magnus is a probable junior synonym. P. gigas is distinguished from other wombats by its strap-shaped upper incisors. The cranial roof also is noticeably inwardly depressed. The species was abundant across Australia, with remains having been found in all states except Western Australia. It is suggested to have had a preference for arid and semi-arid inland habitats, with a diet consisting of a high amount of low quality vegetation. Though it likely had wide home-ranges, it probably did not stray far from fresh water sources. Abundant remains have been found in Pleistocene aged deposits from Lake Callabonna in South Australia. Unlike its living relatives, it is unlikely that Phascolonus engaged in burrowing. Phascolonus disappeared during the Late Pleistocene Quaternary extinction event around 50-40,000 years ago, together with many other large Australian animals, following the arrival of humans to the Australian continent. Phylogenetic analysis suggests that is closely related to the other giant wombat genera Ramsayia and Sedophascolomys.
Text in “About” is quoted from the Wikipedia article Phascolonus (revision 1368849142), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q2705250.