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First systematic assessment of dental growth and development in an archaic hominin (genus, Homo) from East Asia

Xing, Song, Tafforeau, Paul, O’Hara, Mackie C., Modesto-Mata, Mario, Mart\'\in-Francés, Laura, Martinón-Torres, Mar\'\ia, Zhang, Limin, Schepartz, Lynne A, de Castro, José Mar\'\ia Bermúdez, Guatelli-Steinberg, Debbie and others. (2019) First systematic assessment of dental growth and development in an archaic hominin (genus, Homo) from East Asia. Science Advances, 5 (1). ISSN 2375-2548. (doi:10.1126/sciadv.aau0930) (KAR id:93081)


Several human dental traits typical of modern humans appear to be associated with the prolonged period of development that is a key human attribute. Understanding when, and in which early hominins, these dental traits first appeared is thus of strong interest. Using x-ray multiresolution synchrotron phase-contrast microtomography, we quantify dental growth and development in an archaic Homo juvenile from the Xujiayao site in northern China dating to 161,000–224,000 years or 104,000–125,000 years before present. Despite the archaic morphology of Xujiayao hominins, most aspects of dental development of this juvenile fall within modern human ranges (e.g., prolonged crown formation time and delayed first molar eruption). For its estimated age-at-death (6.5 years), its state of dental development is comparable to that of equivalently aged modern children. These findings suggest that several facets of modern human dental growth and development evolved in East Asia before the appearance of fully modern human morphology.

Item Type: Article
DOI/Identification number: 10.1126/sciadv.aau0930
Subjects: Q Science
Divisions: Divisions > Division of Human and Social Sciences > School of Anthropology and Conservation
Depositing User: Mackie O'Hara
Date Deposited: 11 Feb 2022 14:28 UTC
Last Modified: 05 Sep 2023 15:20 UTC
Resource URI: (The current URI for this page, for reference purposes)

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