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Dental and oral nonmetric traits in a Coimbra reference sample: testing intrasample chronological and spatial variation

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Abstract

A reference sample of dental and oral nonmetric traits should represent its biological population from which it stems. The presence of individuals born at different times, different regions, and separate countries in the Coimbra-identified cranial collections provides the test of whether this sample reflects the biological continuity of this Portuguese sample among the late modern (early industrialization, nineteenth century) to early contemporary (early demographic transition, first half of the twentieth century) population of this region of central Portugal. The Coimbra collections were scored for 61 traits using methodology by Hauser and De Stefano (1989), Turner et al. (1991), Scott and Turner (1997), Irish (1998), and Marado and Silva (2016). The 600 individuals in the sample were divided by generation, region, and nationality. Their phenetic diversity was tested with principal component analysis and with the mean measure of divergence statistic. The proximity between the subsamples was generalized, and it mimicked previous genetic marker results. Some small subsamples hindered conclusions; nevertheless, this Coimbra sample is considered a reliable dental reference sample for the Portuguese late modern/early contemporary population.

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Notes

  1. The work of Burnett et al. (2010) on maxillary premolar accessory ridges, MxPAR, was not yet known by the present authors at the time of trait selection.

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Acknowledgements

The authors wish to thank the Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, for the access to their identified osteological collections; Professor Joel D. Irish for the help with quantitative and statistical methods and support; Professor Arkadiusz Sołtysiak for the help with the R program and his MMD R script; and Professor Sofia Wasterlain for the helpful comments which inspired this work and previous statistical guidance. The first author’s contribution was funded by the Fundação para a Ciência e as Tecnologias (FCT; Ministério da Educação e Ciência) with the scholarship reference SFRH/BD/70183/2010. This project received the financial support of the Project Lab2PT—Landscapes, Heritage and Territory Laboratory—AUR/04509 and FCT through the national funds and when applicable of the FEDER co-financing, in the aim of the new partnership agreement PT2020 and COMPETE2020—POCI 01 0145 FEDER 007528.

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Correspondence to Luís Miguel Marado.

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Marado, L.M., Silva, A.M. Dental and oral nonmetric traits in a Coimbra reference sample: testing intrasample chronological and spatial variation. Archaeol Anthropol Sci 10, 1165–1177 (2018). https://doi.org/10.1007/s12520-016-0455-4

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