Outline is Representative of Size and Shape:
Name Details:
Identifd By: Herbert Dick
Named For: San Pedro Valley, New Mexico
Date Identified: 1965
Type Site: Bat Cave, New Mexico
Identifd By: Herbert Dick
Named For: San Pedro Valley, New Mexico
Date Identified: 1965
Type Site: Bat Cave, New Mexico
Point Validity:
Valid type
Dick was a distinguished anthropologist and a professor at the University of New Mexico. This type was named in a professional publication and has many professional references to this type. This is considered a valid type.
Dick was a distinguished anthropologist and a professor at the University of New Mexico. This type was named in a professional publication and has many professional references to this type. This is considered a valid type.
San Pedro Expanding Stem
En Medio (Ancestral Pueblo / Cynthia Irwin-Williams, 1973)Hueco (Mogollon and Hohokam, MacNeish, 1993)
Cluster: San Pedro Cluster
Description of Physical Characteristics and Flaking Pattern:
This is a small to medium triangular expanding stem point. The cross section may vary from flattened to elliptical. The blade may vary from excurvate to straight. The shoulders may range from slightly barded to having a slight upward slope. Wide curving notches enter the blade from the corners creating a expanding stem and giving this point a corner notch or expanding stem shape. The wide notches form a wide neck. The base is most commonly convex, but may vary to straight. Grinding on the basal and lateral edges of the hafting region is not seen on this point. This point has a random flaking pattern.
Size Measurements:
Total Length - 30 to 80 mm (average 40 to 60 mm, mean 47 mm), Stem Length - 7 to 18 mm (average 10 to 14 mm, mean 11 mm), Blade Width - 15 to 35 mm (average 20 to 25 mm, mean 21 mm), Neck Width - 10 to 22 mm (average 12 to 15 mm, mean 14 mm), Basal Width - 15 to 35 mm, (mean 18 mm), Thickness - average 7 mm
Total Length - 30 to 80 mm (average 40 to 60 mm, mean 47 mm), Stem Length - 7 to 18 mm (average 10 to 14 mm, mean 11 mm), Blade Width - 15 to 35 mm (average 20 to 25 mm, mean 21 mm), Neck Width - 10 to 22 mm (average 12 to 15 mm, mean 14 mm), Basal Width - 15 to 35 mm, (mean 18 mm), Thickness - average 7 mm
Commonly Utilized Material:
Obsidian, Basalt, Jasper, Chert, Chalcedony
Obsidian, Basalt, Jasper, Chert, Chalcedony
Additional Comments:
This point has been refer to as the En Medio point, the Basketmaker II point, and the Hueco point. These points may represent the same technologies or continuum of technologies with a slight regional difference. The name Hueco or Basketmaker II has been applied to points with a wider thinner blade with wide notches and a narrow neck while other points found at the same location that have a slightly narrower blade may be classified as San Pedro points. The overall stylistic attributes may have slight variation, the technology remains the same. (Justice, 2002).
En Medio name was used by Cynthia Irwin-Williams for examples found at En Medio shelter in New Mexico. These have also been associated with the Basketmaker II. Smaller examples associated with the Basketmaker III were typed Trujillo by Irwin-Williams.
This point has been refer to as the En Medio point, the Basketmaker II point, and the Hueco point. These points may represent the same technologies or continuum of technologies with a slight regional difference. The name Hueco or Basketmaker II has been applied to points with a wider thinner blade with wide notches and a narrow neck while other points found at the same location that have a slightly narrower blade may be classified as San Pedro points. The overall stylistic attributes may have slight variation, the technology remains the same. (Justice, 2002).
En Medio name was used by Cynthia Irwin-Williams for examples found at En Medio shelter in New Mexico. These have also been associated with the Basketmaker II. Smaller examples associated with the Basketmaker III were typed Trujillo by Irwin-Williams.
Distribution:
Distribution Comments:
This point is primarily found in the four corners region and throughout the southwestern region. These points are found into the Uncompahgre Plateau of Colorado, the Rio Puerco of northwestern New Mexico and throughout most of Arizona. This points are found with decreased frequency into southern Arizona
This point is primarily found in the four corners region and throughout the southwestern region. These points are found into the Uncompahgre Plateau of Colorado, the Rio Puerco of northwestern New Mexico and throughout most of Arizona. This points are found with decreased frequency into southern Arizona
Age / Periods:
Date: 3,000 - 1,700 B.P.
Cultural Period:Late to Transitional Archaic
Glacial Period: Neoglacial to Roman Warm
Culture: Cochise Culture
Date: 3,000 - 1,700 B.P.
Cultural Period:Late to Transitional Archaic
Glacial Period: Neoglacial to Roman Warm
Culture: Cochise Culture
Age Details:
Similar Points:
Black Mesa, Carlsbad, Cienega, Elko Corner Notch, Empire, Marcos, Mount Albion, Palmillas, Williams
Black Mesa, Carlsbad, Cienega, Elko Corner Notch, Empire, Marcos, Mount Albion, Palmillas, Williams
