BORDER AREA OF UTAH, IDAHO & WYOMING
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31, 2012 PETER A. BOSTROM
bifaces in this picture are made of Green River Formation chert.
The biface at top left is described as having very irregular
flaking indicating it's at an early stage of bifacial reduction. One
large end thinning flake was removed on one side. This biface
measures 6 1/16 inches (15.4 cm) long.
The biface at top right is described as an unfinished Clovis point
or knife. This biface has several very large percussion flake removals
and the edge is roughly trimmed. It measures 4 5/8 inches (11.7 cm)
The biface at bottom left has several very large percussion flake
removals like so many other bifaces in the Fenn cache. But one side
of this biface has two particularly large diagonal flakes removed
that is impressive. A large portion of the edge and one triangular
area on one side are original surfaces that have not yet been
removed. This is a very early stage biface. It measures 6 3/8 inches
(16.2 cm) long.
The biface at bottom right is described as having excellent control
of over-shot flaking. There are at least three large flakes that
extend across the full width of the biface. The edges are roughly
trimmed. This biface measures 5 13/16 inches (14.7 cm) long.