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Sahul (), also called Sahul-land, Meganesia, Papualand and Greater Australia, was a paleocontinent that encompassed the modern-day of mainland Australia, Tasmania, New Guinea, and the Aru Islands.
Sahul was in the south-western Pacific Ocean, located approximately north to south between the Equator and the 44th parallel south and west to east between the 112th and the 152nd meridians east. Sahul was separated from Sundaland to its west by the Wallacea. At its largest, when ocean levels were at their lowest, it was approximately in size.
After the last Ice Age global temperatures increased and sea levels gradually rose, flooding the land bridge and separating mainland Australia from New Guinea and Tasmania. New Guinea was separated from the Australian mainland approximately 8,000 years ago, and Tasmania approximately 6,000 years ago.
Sahul hosted a large variety of unique fauna that changed independently from the rest of the world. Most notably nearly all on Sahul were including a range of browsers, burrowers, and ; and rodents represented the only .
It is estimated humans first migrated to Sahul at least 65,000 years ago, making the ocean crossing from Sunda through Wallacea. 10 From Sahul humans spread throughout Oceania.
The name Sahul is used by archeologists, while the name Meganesia tends to be used by Zoogeography. The name Greater Australia has been used, but it has been criticised as "cartographic imperialism" because it places greater emphasis upon what is now Australia at the expense of New Guinea.
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