This paper examines geographic variation in fluted point morphology across North and South America. Metric data on 449 North American points, 31 Central American points, and 61 South American points were entered into a database. Ratios calculated from these metric attributes are used to quantify aspects of point shape across the two continents. The results of this analysis indicate gradual, progressive changes in fluted point outline shape from the Great Plains of western North America into adjacent parts of North America as well as into Central and South America. The South American “Fishtail” form of fluted point is seen as the culmination of incremental changes in point shape that began well into North America. A geographically gradual decline in fluting frequency also is consistent with the stylistic evolution of the stemmed “Fishtail” points. Although few in number, the available radiocarbon dates do suggest that “Fishtail” fluted points in southern South America are younger than the earliest dates associated with Clovis points in western North America. All of these data converge on the conclusion that South American “Fishtail” points evolved from North American fluted points.
Kuhn (1994) argues that small lithic tools provide an optimal means of reducing the weight of mobile tool kits while maximizing potential utility. This assertion contradicts much of the current thinking about mobility and the organization of lithic technology and is at odds with the archaeological record. A flaw in Kuhn's equation for calculating the utility/mass ratio of retouched tools leads him to this erroneous conclusion. Problems with Kuhn's utility/mass ratio equation are described and an alternative formula is offered. The corrected formula indicates that larger stone tools maximize utility at a lower transport cost. Experimental evidence for additional advantages of larger stone tools is also provided.
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