Outline is Representative of Size and Shape:

Name Details:
Identified By:  Toby Morrow
Named For:  Town in Iowa
Date Identified:  1984
Type Site:  Various sites, Cedar County, Iowa
Point Validity: Valid type

Morrow is a professional Archaeologist who has served in many professional archaeologist roles including for the State of Iowa.  This point was named in his book on Iowa projectile points and has many professional references to this type.  This is a valid type.
Atalissa Expanding Stem
Cluster: Motley Cluster
Description of Physical Characteristics and Flaking Pattern:
This is a medium expanding stem point with a flattened to elliptical cross section.  The blade is long and narrow with a straight to slightly excurvate in shape.  The shoulders may range from horizontal to angled upwards.  The notches are broad with an expanding stem.  The base is convex to bulbous and lack any grinding.  This point has a random flaking pattern. 
Size Measurements:

Commonly Utilized Material:
Additional Comments:

The points in this cluster have some similarities to the Snyders points, but these points have a narrower neck than the Snyders type points do (W2).

The Motley point is the most predominate point of this cluster,  The Atalissa and Tipton points are felt to be local variations of the Motley point (Justice 1987).
Distribution:
Distribution Comments:

This point is most commonly found from northern to eastern Iowa.  These points may be found with less frequency in northwestern Illinois, southern Minnesota and southwestern Wisconsin.
Age / Periods:
Date: 3,500 - 2,000 B.P.
Cultural Period: Late Archaic to Early Woodland
Glacial Period: Neoglacial to Roman Warm
Culture:
Age Details:
Similar Points:
Beacon IslandCuppDardanelleGibsonMerom
Other points in this cluster / Related / Associated Points:
Motley, Tipton
Pictures: 

Pictures Provided By:
 Atalissa Projectile Point, Atalissa Arrowhead
As illustrated by Morrow (1984)





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References: (See Reference Page, Entry Number):

25, W2