Morphometric analysis of molars in a Middle Pleistocene population shows a mosaic of `modern' and Neanderthal features

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dc.citation.journalTitleJOURNAL OF ANATOMY
dc.contributor.authorMartinón-Torres, Maríaspa
dc.contributor.authorSpevácková, Petraspa
dc.contributor.authorGracia-Téllez, Anaspa
dc.contributor.authorMartínez, Ignaciospa
dc.contributor.authorBruner, Emilianospa
dc.contributor.authorArsuaga, Juan Luisspa
dc.contributor.authorBermúdez de Castro, José Maríaspa
dc.contributor.departmentUniversidad EAFIT. Departamento de Geologíaspa
dc.contributor.researchgroupCiencias del Marspa
dc.date.accessioned2021-03-23T20:20:22Z
dc.date.available2021-03-23T20:20:22Z
dc.date.issued2013-10-01
dc.description.abstractPrevious studies of upper first molar (M1) crown shape have shown significant differences between Homo sapiens and Homo neanderthalensis that were already present in the European Middle Pleistocene populations, including the large dental sample from atapuerca-Sima de los Huesos (SH). analysis of other M1 features such as the total crown base area, cusp proportions, cusp angles and occlusal polygon have confirmed the differences between both lineages, becoming a useful tool for the taxonomic assignment of isolated teeth from Late Pleistocene sites. However, until now the pattern of expression of these variables has not been known for the SH sample. This fossil sample, the largest collection from the European Middle Pleistocene, is generally interpreted as being from the direct ancestors of Neanderthals, and thus is a reference sample for assessing the origin of the Neanderthal morphologies. Surprisingly, our study reveals that SH M1s present a unique mosaic of H. neanderthalensis and H. sapiens features. Regarding the cusp angles and the relative occlusal polygon area, SH matches the H. neanderthalensis pattern. However, regarding the total crown base area and relative cusps size, SH M1s are similar to H. sapiens, with a small crown area, a strong hypocone reduction and a protocone enlargement, although the protocone expansion in SH is significantly larger than in any other group studied. The SH dental sample calls into question the uniqueness of some so-called modern traits. Our study also sounds a note of caution on the use of M1 occlusal morphology for the alpha taxonomy of isolated M1s.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1182
dc.identifier.doi10.1111/joa.12090
dc.identifier.issn00218782
dc.identifier.issn14697580
dc.identifier.otherWOS;000324330600005
dc.identifier.otherPUBMED;23914934
dc.identifier.urihttp://hdl.handle.net/10784/26866
dc.language.isoengeng
dc.publisherWILEY-BLACKWELL
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0021-8782
dc.sourceJOURNAL OF ANATOMY
dc.subject.keywordAtapuercaeng
dc.subject.keywordcusp angleeng
dc.subject.keywordcusp areaeng
dc.subject.keyworddental reductioneng
dc.subject.keywordmetricseng
dc.subject.keywordoccusal polygon areaeng
dc.subject.keywordSima de los Huesoseng
dc.subject.keywordteetheng
dc.titleMorphometric analysis of molars in a Middle Pleistocene population shows a mosaic of `modern' and Neanderthal featureseng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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