Absolutely incredible if they're right. This would rewrite the entire history of writing. Is there reason to believe this writing was widespread among paleolith

Absolutely incredible if they're right. This would rewrite the entire history of writing. Is there reason to believe this writing was widespread among paleolithic humans, or just in Europe? Is there a lineage of descent between this and our earliest known historical writing systems or did those systems arise from something else? Just the idea that writing arose not to keep track of trade and inventories would be revolutionary in the field.