The Megalania (Megalania Prisca or Varanus Priscus) that inhabited Australia during the Pleistocene era (-2,588,000 to 11,700 years ago)
This is the largest Terrestrial Lizard and grew up to 25 feet long. It possessed toxin secreting oral glands, is related to the modern day goanna, and was carnivorous
It became extinct approximately 40,000 years ago on the arrival of humans
Fossil remains have been found at Mt Surprise and the surrounding district of Lava Plains.