Dental anthropology of Central-Southern, Iron Age Italy: The evidence of metric versus nonmetric traits

Coppa, Alfredo; Cucina, Andrea; Mancinelli, Domenico; Vargiu, Rita; Calcagno, James M.

doi:10.1002/(sici)1096-8644(199812)107:4<371::aid-ajpa1>3.0.co;2-9

Cited by 43 publications

(22 citation statements)

References 38 publications

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“…For this reason, correspondence analysis (using Procedure Correspondence in SPSS 11.5) was employed to identify those traits that vary most among samples. This technique was used in a number of anthropological studies (e.g., Greenacre and Degos, 1977;Schneider, 1986;Sciulli, 1990;Kitagawa et al, 1995;Coppa et al, 1998), including analyses of discrete dental traits.…”

Section: Quantitative Analysesmentioning

confidence: 99%

Population continuity vs. discontinuity revisited: Dental affinities among late Paleolithic through Christian‐era Nubians

Irish

2005

American J Phys Anthropol

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The present study revisits a subject that has been a source of long-standing bioarchaeological contention, namely, estimation of Nubian population origins and affinities. Using the Arizona State University dental anthropology system, frequencies of 36 crown, root, and intraoral osseous discrete traits in 12 late Pleistocene through early historic Nubian samples were recorded and analyzed. Specifically, intersample phenetic affinities, and an indication of which traits are most important in driving this variation, were determined through the application of correspondence analysis and the mean measure of divergence distance statistic. The results support previous work by the author and others indicating that population discontinuity, in the form of replacement or significant gene flow into an existing gene pool, occurred sometime after the Pleistocene. This analysis now suggests that the break occurred before the Final Neolithic. Samples from the latter through Christian periods exhibit relative homogeneity, which implies overall post-Pleistocene diachronic and regional population continuity. Yet there are several perceptible trends among these latter samples that: 1) are consistent with documented Nubian population history, 2) enable the testing of several existing peopling hypotheses, and 3) allow the formulation of new hypotheses, including a suggestion of two post-Pleistocene subgroups predicated on an age-based sample dichotomy.

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Section: Quantitative Analysesmentioning

confidence: 99%

Population continuity vs. discontinuity revisited: Dental affinities among late Paleolithic through Christian‐era Nubians

Irish

2005

American J Phys Anthropol

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“…Combining categorical and continuous data in a single analysis is not new to biological anthropology . Richtsmeier et al.…”

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confidence: 99%

“…Combining categorical and continuous data in a single analysis is not new to biological anthropology (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19). Richtsmeier et al (13) explore the relationship of nonmetric and metric data using the principle of functional cranial analysis and suggests "cranial metric variables [are] good predictors of nonmetric trait expression" (13:219-220).…”

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Ancestry Assessment Using Random Forest Modeling^,^,

Hefner

Spradley

Anderson³

2014

Journal of Forensic Sciences

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A skeletal assessment of ancestry relies on morphoscopic traits and skeletal measurements. Using a sample of American Black (n = 38), American White (n = 39), and Southwest Hispanics (n = 72), the present study investigates whether these data provide similar biological information and combines both data types into a single classification using a random forest model (RFM). Our results indicate that both data types provide similar information concerning the relationships among population groups. Also, by combining both in an RFM, the correct allocation of ancestry for an unknown cranium increases. The distribution of cross-validated grouped cases correctly classified using discriminant analyses and RFMs ranges between 75.4% (discriminant function analysis, morphoscopic data only) and 89.6% (RFM). Unlike the traditional, experience-based approach using morphoscopic traits, the inclusion of both data types in a single analysis is a quantifiable approach accounting for more variation within and between groups, reducing misclassification rates, and capturing aspects of cranial shape, size, and morphology.

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“…We contrast the phenetic patterns with the archaeological evidence. This study is part of an extended chronological research project focusing on dental variation in Italian populations from the Upper Paleolithic to the Middle Ages (Coppa et al 1998(Coppa et al , 2007Cucina et al 1999). …”

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Italian Populations During the Copper Age: Assessment of Biological Affinities Through Morphological Dental Traits

2009

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The Copper Age (3rd millennium BC) was characterized by considerable socioeconomic transformations and coincided with the discovery of metallurgy. In this study we reconstruct the peopling of Italy during this period on the basis of dental morphology traits. Dental remains from 41 sites throughout Italy were analyzed; only three of the sites (Laterza and two from Sicily) span from the late Copper Age to the early Bronze Age. To work with adequate samples, we pooled the collections into nine geographically and culturally homogeneous groups. Dental morphological traits were scored on 8,891 teeth from 1,302 individuals using the ASUDAS scale. The correlation between the mean measure of divergence and geographic distances (calculated as air distances) was computed. Multidimensional scaling with the minimum spanning tree and maximum-likelihood methods was applied to assess the relationships between groups. The results revealed a substantial genetic homogeneity among the populations throughout the Italian peninsula during the Copper Age with the exception of Sardinia, which tends to diverge from the continental samples. Phenetic and geographic distances correlate highly significantly only when the southern samples from Sicily and Laterza are removed from the analysis, which indicates that these groups may have experienced genetic admixture with external populations.

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Dental anthropology of Central-Southern, Iron Age Italy: The evidence of metric versus nonmetric traits

Cited by 43 publications

References 38 publications

Population continuity vs. discontinuity revisited: Dental affinities among late Paleolithic through Christian‐era Nubians

Population continuity vs. discontinuity revisited: Dental affinities among late Paleolithic through Christian‐era Nubians

Ancestry Assessment Using Random Forest Modeling^,^,

Italian Populations During the Copper Age: Assessment of Biological Affinities Through Morphological Dental Traits

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Dental anthropology of Central-Southern, Iron Age Italy: The evidence of metric versus nonmetric traits

Cited by 43 publications

References 38 publications

Population continuity vs. discontinuity revisited: Dental affinities among late Paleolithic through Christian‐era Nubians

Population continuity vs. discontinuity revisited: Dental affinities among late Paleolithic through Christian‐era Nubians

Ancestry Assessment Using Random Forest Modeling, ,

Italian Populations During the Copper Age: Assessment of Biological Affinities Through Morphological Dental Traits

Contact Info

Product

Resources

About

Ancestry Assessment Using Random Forest Modeling^,^,