A geometric morphometrics-based assessment of blade shape differences among Paleoindian projectile point types from western North America

Buchanan, Briggs; Collard, Mark

doi:10.1016/j.jas.2009.09.047

Cited by 123 publications

(74 citation statements)

References 48 publications

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“…However, what is proposed in this article is not an in-depth study of lithic technology itself, but the presentation of a complementary approach, involving the use of geometric morphometrics and multivariate statistical tests not very often used in Brazilian archaeology (but see Okumura & Araujo 2014), but whose potential has been exploited successfully in several studies abroad (Saragusti et al 2005;Cardillo 2006;Buchanan et al 2007;Castiñeira et al 2009;2011;Franco et al 2009;Archer & Braun 2010;Buchanan & Collard 2010;Costa 2010;Lycett et al 2010;Iovita 2011;Brown et al 2012;Charlin & González-José 2012;Lycett & Von Cramon-Taubadel 2012;Thulman 2012;Wang et al 2012;de Azevedo et al 2013;Lycett & Eren 2013;Charlin et al 2014;Davis et al 2015;Fox 2015;Cardillo et al in press). The use of multivariate statistical methods applied to geometric morphometrics data might help elucidate old questions about the characterization of the Umbu tradition, possibly clarifying the meanings related to changes in the morphology of bifacial points over time, the chrono-spatial relationships among different sets of points, among other issues.…”

Section: Why Study Bifacial Points? Formal Artifacts and Their Potentmentioning

confidence: 99%

“…Points were laid flat with their distal ends facing to the right and a metric scale was also included. Virtually flat things like bifacial points can be reasonably analysed using a two-dimensional approach without losing much important information (Velhagen & Roth 1997;Buchanan & Collard 2010). The sample included 658 bifacial points from São Paulo, Paraná, Santa Catarina, and Rio Grande do Sul.…”

Section: Geometric Morphometrics Applied To the Analysed Samplementioning

confidence: 99%

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The Southern Divide: Testing morphological differences among bifacial points from southern and southeastern Brazil using geometric morphometrics

Okumura

Araújo²

2016

JLS

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Abstract:Bifacial points have been used to characterize the "Umbu" tradition in southern and southeastern Brazil. This archaeological tradition has been related to sites dated from the late Pleistocene-early Holocene boundary to near historical times. Such a huge temporal range and vast territory have suggested the existence of greater diversity within this tradition that has been ignored thus far due to the lack of systematic regional studies of such points. Through geometric morphometric analysis, this article aims to test the hypothesis that there are substantial differences in the Holocene bifacial points associated with the Umbu tradition in southeastern Brazil. Five landmarks were digitized in standardized photographs from 658 points from the states of São Paulo, Paraná, Santa Catarina, and Rio Grande do Sul. The results show that points made by groups from southeastern Brazil (São Paulo state) present a very distinct morphology (size and shape) in comparison to those made by the southern groups (Paraná, Santa Catarina and Rio Grande do Sul). This would indicate a regional identity shared only by some groups from São Paulo (at least regarding the projectile points). It is possible that Umbu tradition presents a more restricted range, both in chronological and spatial terms, than the one proposed so far.

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Section: Why Study Bifacial Points? Formal Artifacts and Their Potentmentioning

confidence: 99%

Section: Geometric Morphometrics Applied To the Analysed Samplementioning

confidence: 99%

The Southern Divide: Testing morphological differences among bifacial points from southern and southeastern Brazil using geometric morphometrics

Okumura

Araújo²

2016

JLS

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“…The addition of analytical approaches that employ 3D meshes (Figure 2) helps, in this case, to advance discussions of shape variations that occur among these artifacts; many of which are regularly used in studies of shape using 2D data Buchanan and Collard (2010); Buchanan et al (2011Buchanan et al ( , 2007Buchanan et al ( , 2012Buchanan et al ( , 2013. There are many components of shape are difficult-if not impossible-to characterize using traditional orthogonal approaches Shott and Trail (2012); Shott (2011), and are more accurately captured using their native 3D format Shott (2014Shott ( , 2015.…”

Section: Overviewmentioning

confidence: 99%

3D Scan Data for Selected Artifacts from Blackwater Draw National Historic Landmark (LA3324), New Mexico, USA

Selden¹,

Crawford²

2016

Preprint

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Between February 8-11, 2016, selected artifacts from the Blackwater Draw National Historic Landmark (LA3324) were scanned in advance of a grant proposal to digitally aggregate the Clovis-era artifacts from the Clovis type site. These data were collected using a NextEngineHD running ScanStudioHD Pro, and were post-processed in Geomagic Design X 2016.0.1. All data associated with this project have been made publicly available (open access) and are accessible in Zenodo under a Creative Commons Attribution license, where they can be downloaded for use in additional projects and learning activities. These data have the capacity to augment a variety of research designs spanning the digital humanities, applications of geometric morphometrics, and many others. Additionally, these scans will augment a wide range of comparative research topics throughout the Americas and beyond. Reuse potential for these data is significant.

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“…Although all four methods are seeing increased usage in cultural studies (e.g., Tehrani and Collard 2002;Gray and Atkinson 2003;Holden and Mace 2003;Jordan and Shennan 2003;Rexová et al 2003;Lipo 2006;Beck and Jones 2007;Slice 2007;Gray et al 2009;Coward et al 2008;Jordan et al 2009;Lycett 2009aLycett , b, 2010Buchanan and Collard 2010;Cochrane and Lipo 2010;Currie et al 2010;Heggarty et al 2010;Tehrani et al 2010;Bowern 2012;Buchanan et al 2012Buchanan et al , 2014Thulman 2012;Cochrane 2013;Knappett 2013;Lycett and von Cramon-Taubadel 2013;Tehrani 2013;Jennings and Waters 2014;Gerding 2014, 2015;Smith et al 2015), the fact that they are derived not from anthropology or archaeology but from other disciplines perhaps has limited a wider acceptance. The methods build on each other in logical fashion and allow creation of testable hypotheses concerning cultural transmission and the evolutionary processes that shape it, including invention (mutation), selection, and drift.…”

Section: Introductionmentioning

confidence: 99%

Design Space and Cultural Transmission: Case Studies from Paleoindian Eastern North America

O’Brien

Boulanger

Buchanan

et al. 2015

J Archaeol Method Theory

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Tool design is a cultural trait-a term long used in anthropology as a unit of transmittable information that encodes particular behavioral characteristics of individuals or groups. After they are transmitted, cultural traits serve as units of replication in that they can be modified as part of a cultural repertoire through processes such as recombination, loss, or partial alteration. Artifacts and other components of the archaeological record serve as proxies for studying the transmission (and modification) of cultural traits, provided there is analytical clarity in defining and measuring whatever it is that is being transmitted. Our interest here is in tool design, and we illustrate how to create analytical units that allow us to map tool-design space and to begin to understand how that space was used at different points in time. We first introduce the concept of fitness landscape and impose a model of cultural learning over it, then turn to four methods that are useful for the analysis of design space: paradigmatic classification, phylogenetic analysis, distance graphs, and geometric morphometrics. Each method builds on the others in logical fashion, which allows creation of testable hypotheses concerning cultural transmission and the evolutionary processes that shape it, including invention (mutation), selection, and drift. For examples, we turn to several case studies J Archaeol Method Theory

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A geometric morphometrics-based assessment of blade shape differences among Paleoindian projectile point types from western North America

Cited by 123 publications

References 48 publications

The Southern Divide: Testing morphological differences among bifacial points from southern and southeastern Brazil using geometric morphometrics

The Southern Divide: Testing morphological differences among bifacial points from southern and southeastern Brazil using geometric morphometrics

3D Scan Data for Selected Artifacts from Blackwater Draw National Historic Landmark (LA3324), New Mexico, USA

Design Space and Cultural Transmission: Case Studies from Paleoindian Eastern North America

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