This Fish Tail biface represents a product made by

a highly skilled craftsman. It was made by using

percussion flaking for the initial shaping & bifacial

thinning (the very large flake scars) and pressure

flaking for the fine edge shaping & additional thinning

(the smaller flake scars)--- this is as good as it gets for

this type of flaking technique. It was made at a time

when stone tool making in Egypt had reached a golden

age of flintknapping.  This example has a U shaped

base and is probably an earlier style (A.J. Arkell 1975

p.46). It measures 4 1/2 inches (11.4cm) long, 2 15/16

inches (7.5cm) wide and 3/16 of an inch (5mm) thick.