One tanged instrument (maybe an unfinished arrow point) from the Dutch Neolithic and four tanged arrow points from the PPNB of the Levant.
Projectile points made of stone are known since the MSA and the Middle Paleolithic (http://www.aggsbach.de/2011/11/mousterian-msa-point-from-maroc/) (http://www.aggsbach.de/2011/10/targeting-prey-by-bow-and-arrow/)
Composite technology roughly appeared at the same time (http://www.aggsbach.de/2011/03/to-be-or-not-to-be-aterian/) (http://www.aggsbach.de/2010/08/the-invention-of-hafting-and-backing/)
Even more effective projectile points made of stone emerged at ca 40 k.a. BP and helped H.sapiens to spread from Africa to Eurasia.
Tanging as one principle for successful hafting first appears during the MSA of North Africa (“Aterian”). Tanged points are projectile points that have a tang at one end to facilitate hafting. A tang is made by retouching one, or more usually both edges, in order to create a projection that is thinner than the width of the blank. This projection is then fitted into the dart or arrow shaft.
The perfect symmetry of tanged and hafted points allows an optimal transmission of kinetic power. The aerodynamics of tanged points may be responsible for their success during (pre)-history. Tanged projectiles are known since the Gravettian (Font Robert Points) and were found worldwide in the archaeological record ( e.g. during the Korean Paleolithic, the incipient Jomon period of Japan, Ahrensburg and Bromme cultures of N-Europe, the PPNA/B Neolithic in the Levant and the “Neolithic” cultures of N-Africa and the Sahara). Tanged points as a “near optimal” solution of a given problem have even survived as a component of modern archery.