Riversleigh and Naracoorte were chosen for having many fossils of many different species of extinct animals.
They are listed among the ten richest fossil deposits in the world.
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Because the Japanese environment is not conducive to the formation of fossils, it is unknown how long it has been occupied by humans.
Homo erectus was known to be in what is now Beijing (close to Japan) 850,000 years ago so potentially it could be hundreds of thousands of years.
'It's been such a great time being on the show.'After the final, Kelly took to Instagram to share a snap of herself and Fletcher and wrote: 'Congratulations Fletcher I'm so proud of you.
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He said: 'There has been a marked growth over the last three year and sellers are saying it is because more people are staying in and that the candle has gone from a utility object to a lifestyle feature.''Another aspect is the focus on more men cooking so they are more involved in the home.
'I'd just like to firstly thank my brother Banjo and my sister Gabby, my parents, family and friends and everyone who voted at home, the judges and the contestants,' he said.
One of the reasons they have survived for so long is their ability to adapt to change.