Morphological Variation among Populations of the Western Slimy Salamander on the Edwards Plateau of Central Texas

Copeia ◽  
2011 ◽  
Vol 2011 (1) ◽  
pp. 103-112 ◽  
Author(s):  
Drew R Davis ◽  
Gregory B Pauly
Keyword(s):  
Morphological Variation ◽  
Edwards Plateau ◽  
Central Texas

Experimental Burned Rock Studies on the Edwards Plateau: A View from Camp Bullis, Texas

2005 ◽  
Vol 26 (3) ◽  
pp. 289-329 ◽  
Author(s):  
Peter Pagoulatos
Keyword(s):  
Experimental Study ◽  
Color Change ◽  
Short Term ◽  
Edwards Plateau ◽  
Thermal Alteration ◽  
Central Texas ◽  
Quantitative Analyses ◽  
Earth Oven

This article presents an experimental study concerning the use of thermally altered stone, commonly referred to as fire-cracked, or burned rock. A series of controlled cooking experiments were initiated as limestone cobbles were placed within a prepared earth-oven and re-heated; this type of earth-oven is similar to those found within prehistoric burned rock mounds on the Edwards Plateau of central Texas. Twelve experiments were conducted in this study, as four different sets of cobble assemblages were each re-heated three times, at six, twelve, twenty-four, and forty-eight hour intervals. These heated limestone cobbles were then analyzed for thermal alteration characteristics such as color change, cracking, and spalling, for comparative purposes. Quantitative analyses were then applied to the data in order to establish whether different patterns of thermal alteration exist dependent upon short-term and long-term re-uses.

scholarly journals A quantitative assessment of intraspecific morphological variation in Gahagan bifaces from the southern Caddo area and central Texas

2019 ◽  
Author(s):  
Robert Z. Selden ◽  
John E. Dockall ◽  
Morgane Dubied
Keyword(s):  
Morphological Variation ◽  
Quantitative Assessment ◽  
Time Span ◽  
The Other ◽  
Raw Material ◽  
Material Source ◽  
Hunter Gatherers ◽  
Size Discrepancy ◽  
Central Texas ◽  
Intraspecific Morphological Variation

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 a novel landmarking protocol and 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 two discrete communities of practise; one (emergent Caddo horticulturalists) where Gahagan bifaces were enlisted primarily for burial and ritualistic activities, and the other (central Texas hunter-gatherers) where Gahagan bifaces were utilised over a longer time span in more practical and utilitarian contexts.

Evidences of Pre-Pottery Cultures in Louisiana

1948 ◽  
Vol 13 (3) ◽  
pp. 227-232 ◽  
Author(s):  
C. H. Webb
Keyword(s):  
The State ◽  
Edwards Plateau ◽  
Coles Creek ◽  
Northern Portion ◽  
Central Texas ◽  
River Valleys ◽  
Southern Louisiana

Studies of Louisiana's prehistory have been devoted largely to the pottery-making and mound-building cultures. The topography of the state is primarily responsible for this fact, since the delta lands of southern Louisiana and the wide, fertile river valleys of the northern part were particularly suitable for the agricultural peoples whose numerous sites have attracted attention. Witness to this fact is the long sequence of pottery-containing cultures (Tchefuncte, Marksville, Troyville, Coles Creek, Plaquemine, historic Natchez) delineated by Ford, Willey, and Quimby in central and southern Louisiana, while the Red and Ouachita River valleys in the northern portion present another series of culture periods (Marksville, Coles Creek, Gahagan, Bossier, Belcher, Glendora) which culminate in the historic Caddo.Despite these facts, evidences of pre-pottery cultures are appearing in the state and these may be expected to increase as more careful investigations are pursued. This could be anticipated from the situation in surrounding states—the Edwards Plateau culture of central Texas, the Ozark Bluff Dweller culture of Arkansas and the several strata which underlie the pottery containing cultures in the Southeast, recently reviewed by Haag.

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