Hominin diversity in East Asia during the Middle Pleistocene: A premolar endostructural perspective 1 2 - Archive ouverte HAL
Article Dans Une Revue Journal of Human Evolution Année : 2020

Hominin diversity in East Asia during the Middle Pleistocene: A premolar endostructural perspective 1 2

Résumé

Following the recent studies of East Asian mid-Middle to early Late Pleistocene hominin material, a large spectrum of morphological diversity has been recognized and the coexistence of archaic (‘Homo erectuslike’) and derived (‘modern-like’) dental morphological patterns has been highlighted. In fact, for most of these Chinese fossils, generally categorized as ‘archaic Homo sapiens’ or ‘post-H. erectus Homo’, the taxonomic attribution is a matter of contention. With the help of mCT techniques and a deformationbased 3D geometric morphometric approach, we focused on the morphological variation in the enameledentine junction (EDJ) of 18 upper and lower premolars from Chinese Middle Pleistocene hominins. We then compared our results with a number of fossil and modern human groups, including Early Pleistocene H. erectus from Sangiran; late Early Pleistocene hominins from Tighenif, Algeria; classic Neanderthals; and modern humans. Our results highlight an evolutionary/chronological trend of crown base reduction, elevation of EDJ topography, and EDJ surface simplification in the hominin groups studied here. Moreover, this study brings insights to the taxonomy/phylogeny of 6 late Middle Pleistocene specimens whose evolutionary placement has been debated for decades. Among these specimens, Changyang premolars show features that can be aligned with the Asian H. erectus hypodigm, whereas Panxian Dadong and Tongzi premolars are more similar to Late Pleistocene Homo. Compared with early to mid-Middle Pleistocene hominins in East Asia, late Middle Pleistocene hominins evince an enlarged morphological variation. A persistence of archaic morphotypes and possible admixture among populations during the late Middle Pleistocene are discussed.
Fichier principal
Vignette du fichier
Pan_&_al_2020_JHE_POSTPRINT.pdf (1.87 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-03002831 , version 1 (12-11-2020)

Identifiants

Citer

Lei Pan, Jean Dumoncel, Arnaud Mazurier, Clément Zanolli. Hominin diversity in East Asia during the Middle Pleistocene: A premolar endostructural perspective 1 2. Journal of Human Evolution, 2020, 148, pp.102888. ⟨10.1016/j.jhevol.2020.102888⟩. ⟨hal-03002831⟩
78 Consultations
79 Téléchargements

Altmetric

Partager

More