Abstract
Estimating the sex of human individuals using linear variables from long bones, like foot bones, can be a good choice when no cranium or pelvic bones are available or they are compromisingly damaged. In this study, we used 17 linear variables measured on the third metatarsal in a contemporary human population to calculate discriminant equations. Later, these equations were used to estimate the sex of other known sex and unknown sex fossil individuals of different Homo genus species. A total of 128 equations were calculated with a subsample of the contemporary population, 31 of which were ultimately used. This set of formulae comprised both univariate and multivariate equations. The obtained formulae were tested on a subsample of the original population and later on a medieval external population. The accuracy of these formulae varies greatly, but it is higher for the multivariate than for the univariate ones, and also it decreases significantly in the external population. The equations’ accuracy for fossil populations varies greatly depending on the specific population: they are better at estimating sex for Palaeolithic Homo sapiens and less accurate for ancestral species of the genus Homo. Four fossils of previously unknown sex have been estimated with a significant level of confidence.
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Acknowledgements
The availability of the huge comparative collection, both modern and fossil, would not have been possible without the help and collaboration of multiple institutions and people who allowed access to important collections under their care and kindly provided assistance. Special thanks to Y. Haile-Selassie and L. Jellema of the Cleveland Museum of Natural History (CMNH) for access to the Hamann-Todd Osteological Collection; J. M. Carretero of the University of Burgos (UBU) for access to the San Pablo Medieval Collection. Thanks to C. Lorenzo and E. Trinkaus for kindly providing some comparative data.
Funding
This research has received support in part from the “Ministerio de Ciencia e Innovación (MCI)” of Spain (ProjectsPGC2018-093925-B-C33 and PGC2018-093925-B-C31; MCI/AEI/FEDER, UE).
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Castejón-Molina, P., Pablos, A. Sex estimation by third metatarsals in human fossil and recent populations. Archaeol Anthropol Sci 13, 209 (2021). https://doi.org/10.1007/s12520-021-01441-x
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DOI: https://doi.org/10.1007/s12520-021-01441-x