Outline is Representative of Size and Shape:
Name Details:
Identified By:  Lyman O. Warren described / Ripley P. Bullen named
Named For:   Sumter County, Florida
Date Identified:  1966 / 1976
Type Site:  The Fletcher Davis Site (8HI106), Hillsborough County. Florida
Point Validity: Valid type

Bullen was a distinguished anthropologist and Curator Emeritus of the Florida Museum of Natural History.  He was dedicated to identifying and typing projectile points from Florida.  This point was named in a professional publication and is professionally a widely recognized type.  This is a valid type.
Sumter Stemmed
Cluster: Archaic Stemmed Cluster

Edited by William Lunsford
Description of Physical Characteristics and Flaking Pattern:
This is thick medium ovate stemmed to contracting stem point with an elliptical cross section.  The blade is primarily excurvate giving an ovoid appearance.  Re-sharpened examples may have a straighter blade and may have fine serrations due to the pressure flaking technique used on the blade  The shoulders are generally weak and at an upward angle.  The shoulders are often asymmetrical with one shoulder being weaker or absent.  The stem is stubby, short, and square that may range from straight to slightly contracting.  The base is primarily straight.  This point has a random flaking pattern. 
Size Measurements:

Total Length - 45 to 90 mm (average  52 to 57 mm),  Stem Length - 8 to 13 (average 12  mm),  Width - 31 to 60 mm (average 35 to 45 mm),  Stem Width at shoulders - 19 to 21 mm,  Stem Width at base - 15 to 19 mm,  Thickness - 8 to 11 (Bullen, 1976 and Whatley, 2002)
Commonly Utilized Material:

Coastal plains chert
Additional Comments:

Farr (2006) notes that Sumter points are not a common type. Bullen named this point after Sumter County, but in Bullen Type Collection, there are no Sumter points from Sumter county. Bullen described these as “coarse and massive” with their diagnostic features are weak rounded shoulders with bases that are straight and stems that are short broad stubby with some degree of tapering.  Bullen (1975) states that "while fairly well made, Sumter points have a course or massive appearance".

Bullen (1975) noted that these points are not common and are similar to Arredondo points only taking a few basal thinning flakes to become characteristic of that type.

This type has a broad square stem as described by Bullen.  The type has since changed to include short narrow contracting stems similar to Thonotosassa, just a smaller total length.  William Lunsford points out that many of the examples of Sumter points are re-sharpened Thonotosassa points that have been reduces to a smaller dimension. 
Distribution:
Distribution Comments:

This point is primarily found in the Tampa region and into central Florida.
Age / Periods:
Date: 8,000 - 7,000 B.P.
Cultural Period: Middle Archaic
Glacial Period: Middle Holocene
Culture:
Age Details:
Similar Points:
Alachua, Arredondo, Elora
Other points in this cluster / Related / Associated Points:
Alachua, Arredondo, Hamilton, Levy, Marion, Putnam, Thonotosassa
Pictures: 

Pictures Provided By:
Lloyd Schroder (Peach State Archaeological Society)




 Sumter Projectile Point, Sumter Arrowhead
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References: (See Reference Page, Entry Number):

23, 30, 58, 59, 162, 167, W18