A human lower third molar from the Acheulean site of Cueva del Ángel (Lucena, Córdoba, Spain) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue American Journal of Biological Anthropology Année : 2023

A human lower third molar from the Acheulean site of Cueva del Ángel (Lucena, Córdoba, Spain)

Francisco Bermúdez
Marina Martínez de Pinillos
Francisca Medina-Lara
  • Fonction : Auteur
Cecilia Barroso-Medina
  • Fonction : Auteur
Antonio Cabral-Mesa
  • Fonction : Auteur
Antonio Santiago-Pérez
  • Fonction : Auteur
José Eugenio Ortiz
  • Fonction : Auteur
Thibaud Saos
Amélie Vialet
Guadalupe Monge
  • Fonction : Auteur
Trinidad de Torres
  • Fonction : Auteur
Cecilio Barroso-Ruiz
  • Fonction : Auteur

Résumé

Objectives To present a new dental specimen that will provide additional evidence for a better understanding of early European Upper Pleistocene hominin morphological variability. Materials and Methods We described the morphology of this human right lower third molar at both the outer enamel surface and the enamel–dentine junction by means of micro-computed tomography. In order to better understand hominin diversity, our morphological and metrical results were compared with those of other hominins obtained from published research. We provide a direct aspartic acid racemization dating of the molar. Results The direct dating (104.3 ka) situates the molar within the Marine isotopic stage 5d. The crown dimensions are comparable to those of the Sima de los Huesos sample and modern humans. The combination of a continuous middle trigonid crest and a well-developed anterior fovea lies within the range of morphological variation reported for Neanderthal lower molars. The distal portion of the molar has a prominent protostylid. Discussion Crown and root morphology of this molar fits within the Neanderthal morphological pattern. However, both its dimensions and the absence of a hypoconulid tend to position this specimen away from contemporaneous Neanderthals and rather relate it more closely to some Middle Pleistocene populations. Conclusions A new dental specimen is added to the Iberian Peninsula fossil record from the Marine isotopic stage 5, attesting to some degree of dental variability in the early Upper Pleistocene.
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Dates et versions

hal-03974346 , version 1 (05-02-2023)

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Paternité - Pas d'utilisation commerciale - Partage selon les Conditions Initiales

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Francisco Bermúdez, Marina Martínez de Pinillos, Francisca Medina-Lara, Cecilia Barroso-Medina, Antonio Cabral-Mesa, et al.. A human lower third molar from the Acheulean site of Cueva del Ángel (Lucena, Córdoba, Spain). American Journal of Biological Anthropology, 2023, 180 (2), pp.386-400. ⟨10.1002/ajpa.24677⟩. ⟨hal-03974346⟩
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