Journal
JOURNAL OF ARCHAEOLOGICAL SCIENCE
Volume 35, Issue 10, Pages 2805-2812Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jas.2008.05.008
Keywords
arrow points; dart points; evolutionary archaeology; morphological variation; natural selection; projectile points; stimulated variation
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The appearance of the bow and arrow in North America as a weapon-delivery system is predicted to have prompted an increase in variation among antecedent projectile points that tipped darts propelled by atlatls. Attributes of dart points are expected to display greater variation with the appearance of the bow as prehistoric artisans experimentally Sought points that worked effectively as arrow points. Attributes of arrow points are predicted to also initially display much variation. Subsequent to the initial burst of variation, less-effective variants of attributes were winnowed Out, causing a reduction in variation of attributes of both dart points and arrow points. Both coefficients of variation for individual attributes and summed coefficients of variation for multiple attributes of three sequences of projectile points from evolutionarily independent areas in North America confirm these predictions. (C) 2008 Elsevier Ltd. All rights reserved.
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