There has been evidence that the First peoples were on this continent 60,000 years ago, but the work of Dr Peter Kershaw's palynology (the study of fossil pollen) research suggests that the first peoples were on the continent as long ago as 80,000 years earlier than that.
When specks of prehistoric pollen and charcoal embedded in the ocean floor off the Great Barrier Reef were analyzed it was discovered an abrupt change in the fossil pollen was recorded around 140,000 years ago. [node:read-more:link]