I see your map has no bullroarer records in Tasmania. Does it seem clear that they weren't there, or is there just a lack of evidence? Tasmania has been isolated for a very long time. That could help date its spread.
The Kurnai, just to the North of Tasmania in Australia, associate the bullroarer with the great flood. So it is a bit strange there's nothing in Tasmania. Tasmania also had no figurative art, which is strange. And seemingly not a case where they used to have it but then lost it, though I'm not sure how much archeology has gone on there.
Some think the bullroarer and system of painful initiations spread with the Pama-Nyungan language family ~4,500 years ago, which also corresponds to the spread of more sophisticated stone tools. IMO bullroarer must have been there earlier, at least in the North.
I see your map has no bullroarer records in Tasmania. Does it seem clear that they weren't there, or is there just a lack of evidence? Tasmania has been isolated for a very long time. That could help date its spread.
The Kurnai, just to the North of Tasmania in Australia, associate the bullroarer with the great flood. So it is a bit strange there's nothing in Tasmania. Tasmania also had no figurative art, which is strange. And seemingly not a case where they used to have it but then lost it, though I'm not sure how much archeology has gone on there.
Some think the bullroarer and system of painful initiations spread with the Pama-Nyungan language family ~4,500 years ago, which also corresponds to the spread of more sophisticated stone tools. IMO bullroarer must have been there earlier, at least in the North.