Types of Chipped Stone Artifacts

Coretools — tool is made from the parent block of material.
Flaketools — tool is made from the a flake removed from a core; — the length is typicallyless than 2 times the width (L<2W)
Unifacial— flakes removed from one side of the parent core or flake
Bifacial— flakes removed from two or more faces of the parent core or flake (e.g., projectile point)Blade— the length is typicallygreater than 2 times the width (L>2W) and it has parallel edges.

For the production stages of a bifacial artifactseeIllustration from Conlee Blackboard Lecture Notes