When we go back 40,000 years with the use of the Atlatl which put mankind on the top of the food chain, and man first converting to the bow, and arrow, and what tools, and techniques they used to make their bows, and if you want to use Primitive as a bow description to me that would be the most authentic , and purist form of a Primitive bow. Even in Otzi's century the metal ax was a tool that was available to make his Yew long bow, so I really don't know what is considered Primitive by the masses today.