Outline is Representative of Size and Shape:
Name Details:
Identified By: 
Named For:  Gunther Variant
Date Identified: 
Type Site: 
Point Validity: Collector type

No professional references to this type were located.  This type has many collector source references.  This is considered a collector type.
Gunther Triangle
AKA: U-Back
Collector Type
Cluster: Western Triangle Cluster
Description of Physical Characteristics and Flaking Pattern:
This is a thin small to medium triangular contracting stem point with a flattened cross section.  The blade is broad and may vary from excurvate to incurvate.  The blade is commonly serrated.  The blade is deeply concave and may have asymmetrical, basal corners.  This point is commonly well made and has a random flaking pattern.     
Size Measurements:

Total Length - 27 to 39 mm,  Blade Width - 14 to 26 mm,  Basal Concavity - 2 to 4 mm,  Thickness - 3 to 5 mm
Commonly Utilized Material:
Additional Comments:

This may represent a preform for the Gunther point, or it may represent a modification of a Gunther point that had the stem broken off during manufacturing.

Overstreet (2013), reports that early forms of this point are locally referred to as U-Back points.
Distribution:
Distribution Comments:

This point is primarily found in northern California and northward into the Columbia River Basin.  This point has been found westward through-out the Great Basin with decreased frequency.
Age / Periods:
Date: 1,000 - 200 B.P.
Cultural Period: Developmental to Classic
Late Prehistoric to Historic
Glacial Period: Medieval Warm to Little Ice Age
Culture:
Age Details:
Similar Points:
Buck Gully, Bull Creek, Canalino Triangular, Cottonwood
Other points in this cluster / Related / Associated Points:
Gunther Barbed
Pictures: 

Pictures Provided By:
Western Artifacts
The Coinman
KirkKirk





 Gunther Triangle Projectile Point, Gunther Triangle Arrowhead,
U-Back Projectile Point, U-Back Arrowhead
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References: (See Reference Page, Entry Number):

16, 23, 30, 49