Skip to main content

Distinct mandibular premolar crown morphology in Homo naledi and its implications for the evolution of Homo species in southern Africa

Davies, Thomas W., Delezene, Lucas K, Gunz, Philipp, Hublin, Jean-Jacques, Berger, Lee R, Gidna, Agness, Skinner, Matthew M. (2020) Distinct mandibular premolar crown morphology in Homo naledi and its implications for the evolution of Homo species in southern Africa. Scientific Reports, 10 . Article Number 13196. ISSN 2045-2322. (doi:10.1038/s41598-020-69993-x) (KAR id:82203)

PDF Publisher pdf
Language: English


Creative Commons Licence
This work is licensed under a Creative Commons Attribution 4.0 International License.
Download (1MB) Preview
PDF Author's Accepted Manuscript
Language: English

Restricted to Repository staff only
Contact us about this Publication
Official URL
https://doi.org/10.1038/s41598-020-69993-x

Abstract

Homo naledi displays a combination of features across the skeleton not found in any other hominin taxon, which has hindered attempts to determine its placement within the hominin clade. Using geometric morphometrics, we assess the morphology of the mandibular premolars of the species at the enamel-dentine junction (EDJ). Comparing with specimens of Paranthropus, Australopithecus and Homo (n = 95), we find that the H. naledi premolars from the Dinaledi chamber consistently display a suite of traits (e.g., tall crown, well22 developed P3 and P4 metaconid, strongly developed P3 mesial marginal ridge, and a P3>P4 size relationship) that distinguish them from known hominin groups. Premolars from a second locality, the Lesedi Chamber, are consistent with this morphology. We also find that two specimens from South Africa, SK 96 (usually attributed to Paranthropus) and Stw 80 (Homo sp.), show similarities to the species, and we discuss a potential evolutionary link between H. naledi and hominins from Sterkfontein and Swartkrans.

Item Type: Article
DOI/Identification number: 10.1038/s41598-020-69993-x
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation > Biological Anthropology
Depositing User: Matthew Skinner
Date Deposited: 22 Jul 2020 11:39 UTC
Last Modified: 19 Aug 2020 14:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/82203 (The current URI for this page, for reference purposes)
Skinner, Matthew M.: https://orcid.org/0000-0001-8321-3543
  • Depositors only (login required):