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Supplemental materials for paper: A quantitative assessment of intraspecific morphological variation in Gahagan bifaces from the southern Caddo area and central Texas
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Description: This investigation aggregates intact or reconstructed Gahagan bifaces from the southern Caddo area and central Texas to test the hypothesis that Gahagan biface morphology differs between the regions. The Gahagan bifaces (n = 102) were scanned, then analysed using the tools of geometric morphometrics. Results provide a preview of the significant differences in Gahagan biface morphology expressed between the southern Caddo area and central Texas regions. The size discrepancy represents an inversion of current theoretical constructs that posit a decrease in tool size thought to articulate with an increase in distance from the raw material source. It is posited that the contrasting morphologies represent discrete communities of practice; one (central Texas hunter-gatherers) where Gahagan bifaces were utilised for domestic and practical purposes, and the other (emergent Caddo horticulturalists) where Gahagan bifaces were enlisted primarily for burial and ritualistic activities.
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Supplemental materials available through GitHub.
Supplementary materials for paper: Lithic morphological organisation: Gahagan bifaces from the Southern Caddo Area
This analysis of Gahagan biface morphology enlists the three largest samples of Gahagan bifaces, to include that of the type site (Gahagan Mound) as w...
oxcAAR Script for Radiocarbon Calibration and Modeling
R markdown document (html) for R script used to calibrate and model radiocarbon dates associated with contexts where Gahagan bifaces have been recover...
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