Origins-Scientific Views
However scientists admit that compared to other civilizations not much evidence has survived in Australia. After piecing together information they have found out about: the changes in climate, sea levels, temperature, fossils of flora and fauna, chemical composition of the soil, ancient artefacts such as hunting and gathering equipment, art works and human remains. Through this information scientists are able draw conclusions about the chronology of Aboriginal society.

Experts have been able to date evidence from over forty sites in South Australia (including the Adnyamathanha lands) and they have also been able to mark the distinct phases of technology that appeared over periods of time. The oldest verifiable scientific dating of Aboriginal antiquity in Australia reaches back almost 60,000 years However that is not to say that Aborigines have not been in Australia for longer.
None the less it is an incredibly long time, perhaps older than the American continents.

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