Organic Projectile Points

While we see and are familiar with flint arrowheads and projectile points, I wonder how many were made and used from organic materials but unlike stone points have rotted away over the millennia.

Shown here are:

A.) Splinter bone projectile
B.) Conical deer antler tine point
C.) Point made from an Alligator Gar scale
D.) Bone point

Just a few examples of some perishable points that survived as examples.  Have a great day all!

Jim Bennett