While there is no "Megalania fossil" as a single discovery, the fossil remains of *Megalania prisca* (the scientific name for the giant lizard) have been found across various locations in Australia.

Here are some key sites:

* Lake Callabonna, South Australia: This location yielded some of the most significant Megalania remains, including a partial skull and several vertebrae.

* Queensland: Several bones have been found in this state, including in the Darling Downs and the Riversleigh Fossil Area.

* New South Wales: Fossil evidence has been discovered in locations like the Wellington Caves.

* Other locations: Megalania remains have also been found in other parts of Australia, suggesting a wide distribution across the continent.

It's important to note that the fossils found are often fragmented and incomplete. This makes piecing together the complete picture of Megalania's anatomy and distribution a complex and ongoing process.