, Volume 25, Issue 4, pp 507–518 | Cite as

Dental arch form in the cercopithecidae

  • Joseph R. Siebert
  • Daris R. Swindler
  • John D. Lloyd


The dental arches of the major genera of Old World monkeys (superfamily Cercopithecoidea) were studied by morphometric techniques. Bicanine and bimolar breadths and arch lengths were ascertained for maxillary and mandibular arches. This data was then subjected to a variety of statistical tests. Corresponding arch dimensions of the upper and lower dentition showed the highest correlations, while the lowest correlations were generally observed between comparisons of arch dimensions and body size. A new expression was developed, relative male palate size (RMPS), which quantified the degree of sexual dimorphism while correcting for body size. The four hierarchies examined using RMPS values were sexual dimorphism, modes of sexual selection and predator defense and diet. Maxillary bicanine breadth was the only parameter that exhibited sexual dimorphism consistently in each of the four hierarchies, although differences in arch size were identified for diet and predator defense. Species grouped by predator defense showed the most sexual dimorphism in arch parameters.


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Copyright information

© Japan Monkey Centre 1984

Authors and Affiliations

  • Joseph R. Siebert
    • 2
    • 1
  • Daris R. Swindler
    • 2
  • John D. Lloyd
    • 2
  1. 1.Department of LaboratoriesThe Children's Orthopedic Hospital and Medical CenterSeattleU.S.A.
  2. 2.Department of Anthropology, DH-05University of WashingtonSeattleU.S.A.

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