Dentine morphology of Atapuerca‐Sima de los Huesos lower molars: Evolutionary implications through three‐dimensional geometric morphometric analysis

Hanegraef, Hester; Martinón‐Torres, María; Pinillos, Marina Martínez de; Martín‐Francés, Laura; Vialet, Amélie; Arsuaga, Juan Luís; Castro, José Marı́a Bermúdez de

doi:10.1002/ajpa.23428

Cited by 12 publications

(8 citation statements)

References 151 publications

(224 reference statements)

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“…Furthermore, specimens such as Petralona 1 from Greece and Zuttiyeh 1 from Israel exhibit ambiguous patterns of morphology (e.g., Freidline et al, 2012; Roksandic et al, 2018), raising the possibility that their populations were not directly ancestral to H. neanderthalensis . It was proposed instead that there were multiple populations within Europe and Western Asia at this time (Arsuaga et al, 2014; Hanegraef et al, 2018; Stringer, 2012) with the Iberian Peninsula acting as a glacial refugium or southern European zone to which hominin populations withdrew during periods of extreme cold in the rest of the continent. It was here that the ancestors of H. neanderthalensis may have arisen in geographical isolation relative to other locations, being limited initially by the Pyrenees mountains.…”

Section: Introductionmentioning

confidence: 99%

Nasopharyngeal morphology contributes to understanding the “muddle in the middle” of the Pleistocene hominin fossil record

Pagano

Smith

Balzeau

et al. 2022

The Anatomical Record

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The late archeologist Glynn Isaac first applied the term "muddle in the middle" to a poorly understood period in the Middle Pleistocene human fossil record. This study uses the nasopharyngeal boundaries as a source of traits that may inform this unclear period of human evolution. The nasopharynx lies at the nexus of several vital physiological systems, yet relatively little is known about its importance in human evolution. We analyzed a geographically diverse contemporary Homo sapiens growth series (n = 180 adults, 237 nonadults), Homo neanderthalensis

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Section: Introductionmentioning

confidence: 99%

Nasopharyngeal morphology contributes to understanding the “muddle in the middle” of the Pleistocene hominin fossil record

Pagano

Smith

Balzeau

et al. 2022

The Anatomical Record

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“…While, the second group would be characterised by closer morphological dental affinities with the classic Neanderthals, including the Atapuerca-SH, Pontnewydd, Fontana Ranuccio, Visogliano, Steinheim and Montmaurin hominins (e.g. Gómez-Robles et al 2007, 2011Hanegraef et al 2018;Martínez de Pinillos et al 2020;Martinón-Torres et al 2012;Zanolli et al 2018). However, even within these groups there is variability.…”

Section: Discussionmentioning

confidence: 99%

Middle Pleistocene hominin teeth from Biache-Saint-Vaast, France

Martín‐Francés

Castro

Pinillos

et al. 2022

Archaeol Anthropol Sci

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The study of dental morphology can be a very useful tool to understand the origin and evolution of Neanderthals in Europe during the Middle Pleistocene (MP). At present, the earliest evidence, ca. 430 ka, of a pre-Neanderthal population in Europe is the hominin sample from Atapuerca-Sima de los Huesos (SH) that present clear dental affinities with Neanderthals while other penecontemporaneous populations, such as Arago or Mala Balanica, exhibit less Neanderthal traits. We present the morphometric study of the external and internal dental structures of eleven hominin dental remains recovered from the MP, ca. 240 ka, French site of Biache-Saint-Vaast (BSV). Our analyses place the BSV hominins within the MP group, together with SH, Fontana Ranuccio, Visogliano, Steinheim or Montmaurin, that show greater morphological affinities with Neanderthals. Moreover, we identified interpopulation variability in the expression of the enamel thickness trait, with BSV hominins sharing the unique combination of thin and thick pattern in the premolars and molars with the SH population. These results further support the coexistence of two or more populations in Europe during the MP that reflect the population and settlement of human groups suggested by the Central Area of Dispersals of Eurasia (CADE) and sink and source model.

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“…Many features of the tooth crown originate in this membrane, which is preserved in mature teeth as the enamel-dentine junction (EDJ) prior to enamel deposition and is primarily responsible for external crown morphology (Butler 1956;Skinner et al 2008b;Morita et al 2014). Interestingly, the EDJ has proved a useful proxy for worn teeth in the study of taxonomic differences among some primate and Homo taxa (Skinner et al 2008a(Skinner et al , 2010Ortiz et al 2017;Hanegraef et al 2018) as well as in living human populations. This has made it possible to increase the sample size in dental morphology studies (Smith et al 2006;Monson et al 2020).…”

Section: Geometric Morphometrics On the Enamel-dentine Junction As A ...mentioning

confidence: 99%

Identifying biological affinities of Holocene northern Iberian populations through the inner structures of the upper first molars

Gamarra

Lozano

Bove

et al. 2022

Archaeol Anthropol Sci

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Neolithisation was a relatively fast process that affected both the interior and coastal zones of the Iberian Peninsula, but it was also a heterogeneous process that had diverse impacts on genomic and cultural diversity. In the Late Neolithic–Chalcolithic, a change in funerary practices, cultural material and trade networks occurred, and genomic heterogeneity decreased, suggesting human mobility and genetic admixture between different Iberian populations. Dental morphology has emerged as an effective tool for understanding genomic variability and biological affinities among ancient human populations. But, surprisingly, less attention has been paid to the morphological traits of inner dental tissues in Holocene European populations and their utility for the study of population dynamics. We applied 3D geometric morphometric methods on the enamel-dentine junction (EDJ) of the first upper molars to explore the biological affinities of north-eastern Iberian Peninsula populations from the Late Neolithic–Chalcolithic to the Bronze Age. Our results show that the EDJ morphologies of the northern Iberian Peninsula populations were generally homogeneous, indicative of genetic admixture as a result of human mobility and exchange networks. However, differences in the EDJ traits in remains from the Can Sadurní site are indicative of distant biological affinities with nearby populations. Additionally, the hypocone associated dentine area and the position of the trigon dentine horns relative to each other on the occlusal surface best describe the variability found among the samples studied. This study highlights the utility of EDJ morphology as a genetic proxy in Holocene population dynamic studies when paleogenomic studies are absent.

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Dentine morphology of Atapuerca‐Sima de los Huesos lower molars: Evolutionary implications through three‐dimensional geometric morphometric analysis

Cited by 12 publications

References 151 publications

Nasopharyngeal morphology contributes to understanding the “muddle in the middle” of the Pleistocene hominin fossil record

Nasopharyngeal morphology contributes to understanding the “muddle in the middle” of the Pleistocene hominin fossil record

Middle Pleistocene hominin teeth from Biache-Saint-Vaast, France

Identifying biological affinities of Holocene northern Iberian populations through the inner structures of the upper first molars

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