Outline is Representative of Size and Shape:
Name Details:
Identified By:  Michael W. Spence
Named For: 
Date Identified:  1971
Type Site:
Point Validity: Valid type

Michael Spence is a distinguished anthropologist who retired Professor Emeritus from the Department of Anthropology, University of Western Ontario. He conducted extensive research in Mexico and Ontario. This type was identified in his publication on cultures of Mexico.
Escopeta Triangular
Cluster: Late Southern Triangle Cluster
Description of Physical Characteristics and Flaking Pattern:
This is a medium  triangular point with a thin cross section.  The blade ranges from primarily straight to just slightly excurvate.  The base varies from just slightly concave to just slightly convex with well defined basal corners.  This point commonly well made with a random flaking pattern.  pentagonal stemmed point with a flattened cross section. 
Size Measurements:

Length - incomplete,  Blade Width - 21 to 22 mm (average 21 mm), Thickness - 3 to 5 mm (average 4 mm) ***Based on small sample size***
Commonly Utilized Material:
Additional Comments:

The Escopeta Triangular is a larger version of the Navacoyan Triangular point (Spence, 1971)
Distribution:
Distribution Comments:

These point are found in association with the Llano Grande culture of Sonora, Chihuahua, Sinloa, Durango, Nayarit, Jalisco, and Zacatecas.
Age / Periods:
Date: 1,700 - 900 B.P.
Cultural Period: Transitional Archaic to Preclassic
Glacial Period: Roman Warm to Medieval Warm
Culture: Llano Grande culture
Age Details:
Similar Points:
Adams Triangle, Durango Concave, Navacovan Triangle, Nogales, Sain Alto Triangular, Suchil Triangle
Other points in this cluster / Related / Associated Points:
Pictures: 

Pictures Provided By:
Escopeta Projectile Point, Escopeta Arrowhead
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References: (See Reference Page, Entry Number):

195