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dc.contributor.authorHanegraef, Hester-
dc.contributor.authorMartinón-Torres, María-
dc.contributor.authorMartínez de Pinillos, Marina-
dc.contributor.authorMartín-Francés, Laura-
dc.contributor.authorVialet, Amélie-
dc.contributor.authorArsuaga, Juan Luis-
dc.contributor.authorBermúdez de Castro, José María-
dc.identifier.citationAmerican Journal of Physical Anthropology, 2018, 166 (2), 276-295es_ES
dc.description.abstractObjectives This study aims to explore the affinities of the Sima de los Huesos (SH) population in relation to Homo neanderthalensis, Arago, and early and contemporary Homo sapiens. By characterizing SH intra‐population variation, we test current models to explain the Neanderthal origins. Materials and Methods Three‐dimensional reconstructions of dentine surfaces of lower first and second molars were produced by micro‐computed tomography. Landmarks and sliding semilandmarks were subjected to generalized Procrustes analysis and principal components analysis. Results SH is often similar in shape to Neanderthals, and both groups are generally discernible from Homo sapiens. For example, the crown height of SH and Neanderthals is lower than for modern humans. Differences in the presence of a mid‐trigonid crest are also observed, with contemporary Homo sapiens usually lacking this feature. Although SH and Neanderthals show strong affinities, they can be discriminated based on certain traits. SH individuals are characterized by a lower intra‐population variability, and show a derived dental reduction in lower second molars compared to Neanderthals. SH also differs in morphological features from specimens that are often classified as Homo heidelbergensis, such as a lower crown height and less pronounced mid‐trigonid crest in the Arago fossils. Discussion Our results are compatible with the idea that multiple evolutionary lineages or populations coexisted in Europe during the Middle Pleistocene, with the SH paradigm phylogenetically closer to Homo neanderthalensis. Further research could support the possibility of SH as a separate taxon. Alternatively, SH could be a subspecies of Neanderthals, with the variability of this clade being remarkably higher than previously thought.es_ES
dc.description.sponsorshipThis study has been supported by the Dirección General de Investigación of the Spanish Ministerio de Economía y Competitividad (MINECO)/FEDER grant number: CGL2015‐65387‐C3‐2‐3‐P and The Leakey Foundation through the personal support of Dub Crook and Gordon Gettty to one of the authors (MM‐T). LM‐F is beneficiary of a Fundación Atapuerca Post‐Doctoral Research Grant, whereas MM‐P has a Predoctoral contract of the Junta de Castilla y León.es_ES
dc.subjectDental anthropologyes_ES
dc.subjectEuropean Pleistocenees_ES
dc.subjectHominin taxonomyes_ES
dc.subjectNeanderthal originses_ES
dc.titleDentine morphology of Atapuerca‐Sima de los Huesos lower molars: evolutionary implications through three‐dimensional geometric morphometric analysises_ES
Appears in Collections:Paleobiología
Colecciones, Conservación y Restauración
Microscopía y Microtomografía Computarizada

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