Editing Projectile point (section)

== History in North America ==
A large variety of prehistoric arrowheads, dart points, javelin points, and spear points have been discovered. [[Chert]], [[obsidian]], [[quartzite]], [[quartz]], and many other rocks and minerals were commonly used to make points in North America.  The oldest projectile points found in North America were long thought to date from about 13,000 years ago, during the [[Paleo-Indian|Paleo-Indian period]], however recent evidence suggests that North American projectile points may date to as old as 15,500 years.<ref>{{cite news | url=https://www.nytimes.com/2011/03/25/science/25archeo.html?hpw | work=The New York Times | title=Clovis People Weren't First in Americas, Texas Spear Points Suggest | date=24 March 2011 | url-status=live | archive-url=https://web.archive.org/web/20150319035529/http://www.nytimes.com/2011/03/25/science/25archeo.html?hpw | archive-date=19 March 2015 }}</ref>  Some of the more famous Paleo-Indian types include [[Clovis point|Clovis]], [[Folsom point|Folsom]] and Dalton points.<ref>[http://www.theaaca.com/index.htm Authentic Artefacts Collectors Association] {{webarchive|url=https://web.archive.org/web/20081120201207/http://www.theaaca.com/index.htm |date=2008-11-20 }}</ref>

=== Types ===
Projectile points fall into two general types: [[dart (missile)|dart]] or [[javelin]] points and [[Arrowhead|arrow points]]. Larger points were used to tip [[atlatl]] javelins or darts and spears. Arrow points are smaller and lighter than dart points, and were used to tip arrows. The question of how to distinguish an arrow point from a point used on a larger projectile is non-trivial. According to some investigators, the best indication is the width of the [[hafting]] area, which is thought to correlate to the width of the shaft.<ref>Wyckoff 1964</ref> An alternative approach is to distinguish arrow points by their necessarily smaller size (weight, length, thickness).<ref>Thomas 1981</ref>

Projectile points come in an amazing variety of shapes and styles, which vary according to chronological periods, cultural identities, and intended functions.

Typological studies of projectile points have become more elaborate through the years. For instance, [[Gregory Perino]] began his categorical study of projectile point typology in the late 1950s. Collaborating with Robert Bell, he published a set of four volumes defining the known point types of that time. Perino followed this several years later with a three-volume study of "Selected Preforms, Points and Knives of the North American Indians".<ref>Fraser 2005</ref> Another recent set of typological studies of North American projectile points has been produced by Noel Justice.<ref>Justice 1987</ref><ref>Justice 2001</ref><ref>Justice 2002a</ref><ref>Justice 2002b</ref>

===Selected North American types===
* [[Bare Island projectile point]]
* [[Barnes projectile point]]
* [[Cascade point]]
* [[Clovis point]]
* [[Cumberland point]]
* [[Eden point]]
* [[Elko point]]
* [[Folsom point]]
* [[Greene projectile point]]
* [[Jack's Reef pentagonal projectile point]]
* [[Lamoka projectile point]]
* [[Levanna projectile point]]
* [[Neville archaeological site|Neville projectile point]] 
* [[Susquehanna broad projectile point]]
* [[Plano point]]