Supraorbital morphology and social dynamics in human evolution
Open accessAbstract
Uniquely, with respect to Middle Pleistocene hominins, anatomically modern humans do not possess marked browridges, and have a more vertical forehead with mobile eyebrows that play a key role in social signalling and communication. The presence and variability of browridges in archaic Homo species and their absence in ourselves have led to debate concerning their morphogenesis and function, with two main hypotheses being put forward: that browridge morphology is the result of the spatial relationship between the orbits and the brain case; and that browridge morphology is significantly impacted by biting mechanics. Here, we virtually manipulate the browridge morphology of an archaic hominin (Kabwe 1), showing that it is much larger than the minimum required to fulfil spatial demands and that browridge size has little impact on mechanical performance during biting. As browridge morphology in this fossil is not driven by spatial and mechanical requirements alone, the role of the supraorbital region in social communication is a potentially significant factor. We propose that conversion of the large browridges of our immediate ancestors to a more vertical frontal bone in modern humans allowed highly mobile eyebrows to display subtle affiliative emotions.
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Spikins, P. (2022) · White Rose University Press eBooks · doi:10.22599/hiddendepths.d · Cited by 1 · see citing works
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Bejarano, T. (2023) · Preprints.org · doi:10.20944/preprints202302.0131.v1 · Cited by 1 · see citing works
Skoyles, J. R. (2023) · doi:10.32942/x2rp6m · Cited by 1 · see citing works
Parkinson, B. (2019) · Cambridge University Press eBooks · doi:10.1017/9781108696234.007
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Parkinson, B. (2019) · Cambridge University Press eBooks · doi:10.1017/9781108696234.003
Parkinson, B. (2019) · Cambridge University Press eBooks · doi:10.1017/9781108696234.008
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Parkinson, B. (2019) · Cambridge University Press eBooks · doi:10.1017/9781108696234.001
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Parkinson, B. (2019) · Cambridge University Press eBooks · doi:10.1017/9781108696234.004
Parkinson, B. (2019) · Cambridge University Press eBooks · doi:10.1017/9781108696234.011
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Spikins, P. (2022) · White Rose University Press eBooks · doi:10.22599/hiddendepths.f
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Biosocial complexity and the skull
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Primitive vs. Advanced Theory-of-Mind: Defending and Reformulating the DifferencePreprint
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Compassion: From Neuroscience to New Horizons and Innovative, Inclusive Research Agendas
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- Authors
- Godinho, R. M., Spikins, P., & O’Higgins, P.
- Affiliations
- Interdisciplinary Center for Archaeology and the Evolution of Human Behaviour (PT)
- University of York (GB)
- Venue
- Nature Ecology & Evolution
- Published
- 2018-04-09
- Volume
- 2
- Issue
- 6
- Pages
- 956-961
- ISSN
- 2397-334X (ISSN-L)
- OpenAlex
- W2796637297
- Cited by
- 73
- References
- 68
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 3 · 2023: 12 · 2022: 11 · 2021: 6 · 2020: 11 · 2019: 17 · 2018: 5
- FWCI
- 41.10
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Nature Ecology & Evolution (publishedVersion)
- PubMed (publishedVersion)
- White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (submittedVersion)
- Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
- Topics
- Social Sciences › Anthropology › Pleistocene-Era Hominins and Archaeology
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Evolutionary Psychology and Human Behavior
- Social Sciences › Psychology › Social Psychology › Primate Behavior and Ecology
- Keywords
- supraorbital region, human evolution, social communication, facial expressions, Middle Pleistocene hominins
- MeSH terms
- Animals, Biological Evolution, Fossils, Frontal Bone, Humans, Orbit, Social Behavior, Zambia, Hominidae
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