Function and Fusion of the Mandibular Symphysis in Mammals: A Comparative and Experimental Perspective

  • Matthew J. Ravosa
  • Aaron S. Hogue
Chapter
Part of the Developments in Primatology: Progress and Prospects book series (DIPR)

Abstract

Understanding the functional underpinnings of interspecific and ontogenetic variation in a given character, as well as in a character complex, is vital for unraveling the adaptive significance of major morphological transformations during the evolution of a higher-level clade. One feature long recognized as distinguishing basal anthropoids from their “prosimian” ancestors is the evolution of a fully fused or ossified mandibular Symphysis (e.g., Fleagle, 1999; Martin, 1990; Szalay and Delson, 1979). Due to major fossil discoveries over the past 15 years (Beard et al., 1994, 1996; Jaeger et al., 1999; Simons, 1989, 1992, 1995; Simons et al., 2001) as well as recent experimental and comparative analyses of important functional relationships (e.g., Hylander et al., 1987, 1998, 2000, 2003a; Ravosa, 1991a, 1999; Ravosa et al., 2000a), our understanding of evolutionary changes in masticatory form among living and fossil anthropoids is greatly improved.

Keywords

Sister Taxon Power Stroke Partial Fusion Occlusal Force 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 2004

Authors and Affiliations

  • Matthew J. Ravosa
    • 1
  • Aaron S. Hogue
    • 2
  1. 1.Field Museum of Natural History and Department of Cell and Molecular BiologyNorthwestern University Feinberg School of MedicineChicagoUSA
  2. 2.Northwestern University Feinberg School of MedicineChicagoUSA

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