Function and Fusion of the Mandibular Symphysis in Primates

Stiffness or Strength?
  • Matthew J. Ravosa
  • William L. Hylander
Part of the Advances in Primatology book series (AIPR)

Abstract

Over the past. 30 years a series of morphological and experimental analyses have attempted to address questions about the functional and evolutionary significance of mandibular symphyseal fusion or complete ossification of the joint between the two dentaries (Scapino, 1965, 1981; Hylander, 1975a, 1977, 1979a,b, 1984, 1985; Beecher, 1977, 1979, 1983; Hirschfeld et al., 1977; Dessein, 1985; Hylander et al., 1987; Greaves, 1988, 1993; Ravosa, 1991; M. J. Ravosa, unpublished data; Ravosa and Hylander, 1993; Hylander and Johnson, 1994; Ravosa and Simons, 1994). This work has increased our understanding of the functional morphology of the mammalian masticatory apparatus, in part by highlighting the interaction of jaw mechanics, diet and allometry on symphyseal form. Many of these studies have also influenced adaptive explanations for the evolution of anthropoid craniodental morphology and impact directly on hypotheses regarding phylogenetic affinities among certain Eocene and Oligocene primates (Hiiemae and Kay, 1972, 1973; Gingerich, 1977, 1979; Beecher, 1977, 1979; Cachel, 1979a,b; Hylander, 1979a,b; Szalay and Delson, 1979; Rosenberger, 1981, 1986; Rosenberger et al., 1985; Rasmussen, 1986, 1990; Greaves, 1988, 1993; Simons, 1989, 1990, 1992; Ravosa, 1991; M. J. Ravosa, unpublished data; Rasmussen and Simons, 1992; Ravosa and Hylander, 1993; Ravosa and Simons, 1994).

Keywords

Bite Force Positive Allometry Anthropoid Primate Hard Object Mandibular Symphysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Matthew J. Ravosa
    • 1
    • 2
  • William L. Hylander
    • 1
  1. 1.Department of Biological Anthropology and AnatomyDuke University Medical CenterDurhamUSA
  2. 2.Department of Zoology, Division of MammalsField Museum of Natural HistoryChicagoUSA

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