This Fish Tail biface is a fairly complete example,

except for a nick or two and a break on both tips of the

"wings". But it's not nearly so well made as the two
previous examples. In fact this one may have been

made from a broken Gerzean knife. There is a remnant

of an area of obvious surface polish near the upper left
"wing" in this picture (image on the left). Polishing the

surface was part of the manufacturing process used to

make Gerzean knives but was not a technique used to

make Fish Tail bifaces. This example has the earlier style

"U" shaped blade that probably dates to Predynastic Egypt

(A.J. Arkell 1975 p.46). It measures 4 inches (10.2cm) long,

2 5/8 inches (6.6cm) wide and 3/16 of an inch (5mm) thick.