Cited by 20Pleistocene-Era Hominins and ArchaeologyMorphological variations and asymmetryPrimate Behavior and Ecology

The facial skeleton of the chimpanzee‐human last common ancestor

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Cobb, Samuel N.·2008·Journal of Anatomy

Abstract

This review uses the current morphological evidence to evaluate the facial morphology of the hypothetical last common ancestor (LCA) of the chimpanzee/bonobo (panin) and human (hominin) lineages. Some of the problems involved in reconstructing ancestral morphologies so close to the formation of a lineage are discussed. These include the prevalence of homoplasy and poor phylogenetic resolution due to a lack of defining derived features. Consequently the list of hypothetical features expected in the face of the LCA is very limited beyond its hypothesized similarity to extant Pan. It is not possible to determine with any confidence whether the facial morphology of any of the current candidate LCA taxa (Ardipithecus kadabba, Ardipithecus ramidus, Orrorin tugenensis and Sahelanthropus tchadensis) is representative of the LCA, or a stem hominin, or a stem panin or, in some cases, a hominid predating the emergence of the hominin lineage. The major evolutionary trends in the hominin lineage subsequent to the LCA are discussed in relation to the dental arcade and dentition, subnasal morphology and the size, position and prognathism of the facial skeleton.

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Crossref · 10.1111/j.1469-7580.2008.00866.x

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  • No extant African hominoid presents an ideal facial morphotype for the chimpanzee-human ancestor.

    “no extant African hominoid presents an ideal facial morphotype for the chimphuman ancestor 8”

    From The evolutionary history of the human face (2019) · cites this paper as [8]

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  1. Gröning F (2003) Zur endo-und intracranialen Variabilität der Frontalregion beim archaischen und modernen Homo sapiens in Afrika und Europa: Eine Studie mit Hilfe CT-basierender Rekonstruktion. Masters thesis. University of Hamburg.
  2. Holloway R (1978) Problems of brain endocast interpretation ana African hominid evolution. In Early Hominids of Africa (ed. Jolly CJ), pp. 379-401. London: Duckworth.
  3. Howell FC (1978) Hominidae. In Evolution of African Mammals (eds Maglio VJ, Cooke HBS), pp. 154-248. Cambridge: Harvard University Press.
  4. McHenry HM (1996) Homoplasy, clades and hominid phylogeny. In Contemporary Issues in Human Evolution (eds Meikle WF, Howells FC, Jablonski NG), pp. 77-92. San Francisco: California Academy of Sciences.
  5. Robinson JT (1962) The origin and adaptive radiation of the aus- tralopithecines. In Evolution und Hominization (ed. Kurth G), pp. 120-140. Stuttgart: Gustav Fischer.
  6. Wood BA (1991) Koobi Fora Research Project IV: Hominid Cranial Remains from Koobi Fora. Oxford: Clarendon Press.

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Authors
Cobb, S. N.
Affiliations
University of Hull (GB)
Corresponding author
Cobb, Samuel N.
Venue
Journal of Anatomy
Publisher
Wiley
Published
2008-04
Volume
212
Issue
4
Pages
469-485
ISSN
  • 0021-8782 (ISSN-L)
  • 1469-7580
OpenAlex
W2051231927
Cited by
20
References
115
Citations by year
2026: 1 · 2025: 1 · 2022: 1 · 2021: 2 · 2020: 1 · 2019: 1 · 2017: 2 · 2016: 1 · 2014: 2 · 2013: 1 · 2012: 1
FWCI
2.21
Type
journal article
Language
en
Open access
Locations
  • Journal of Anatomy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Association of Surgeons of Great Britain and Ireland
Topics
  • Social Sciences › Anthropology › Pleistocene-Era Hominins and Archaeology
  • Physical Sciences › Mathematics › Geometry and Topology › Morphological variations and asymmetry
  • Social Sciences › Psychology › Social Psychology › Primate Behavior and Ecology
Keywords
facial skeleton, hominin evolution, Pan, Ardipithecus ramidus, Orrorin tugenensis, Sahelanthropus tchadensis, homoplasy, dentition, prognathism, facial morphology
MeSH terms
Animals, Anthropology, Physical, Pan troglodytes, Dentition, Biological Evolution, Facial Bones, Humans, Physiology, Comparative, Hominidae

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