Reconstructing Social Behavior from Dimorphism in the Fossil Record

  • J. Michael Plavcan
Part of the Advances in Primatology book series (AIPR)

Abstract

The social behavior of extinct species has long been a subject for speculation. Group size and composition, mating systems, territoriality, resource defense, predator defense, cooperation, and competition, among others, have all been inferred for extinct taxa (e.g., Aiello and Dunbar, 1993; Blumenberg, 1981, 1984; Fleagle et al.1980; Gingerich, 1981, 1995; Kay, 1982; Kay et al.1997; Krishtalka et al.1991; Lovejoy, 1981; McHenry 1991, 1992, 1994a,b; Moore, 1997; Plavcan and van Schaik, 1997a; Simons and Rasmussen, 1996; Simons et al.1999; Wrangham, 1987; Zihlman, 1997— see chapter by Nunn and van Schaik). Such characters are important for painting a history of the evolution and diversification of lineages, and they occasionally feature as key components of models for primate social evolution. There is an especially rich literature speculating on the evolution of human social behavior (e.g., Kinzey, 1987). The purpose of this chapter is to evaluate how social behavior can (or cannot) be inferred in extinct primates on the basis of remains preserved in the fossil record.

Keywords

Europe Autocorrelation Holocene Miocene Hunt 

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References

  1. Aiello, L. C., and Dunbar, R. I. M. 1993. Neocortex size, group size, and the evolution of language. Curr. Anthropol. 34: 184–193.Google Scholar
  2. Albrecht, G. H. 1976. Methodological approaches to morphological variation in primate populations: the celebesian macaques. Yearb. Phys. Anthropol. 20: 290–308.Google Scholar
  3. Albrecht, G. H. 1980. Latitudinal, taxonomic, sexual, and insular determinants of size variation in pigtail macaques Macaca nemestrina. Int. J. Primatol. 1: 141–152.Google Scholar
  4. Albrecht, G. H., and Miller, J. A. 1993 Geographic variation in primates: a review with implications for interpreting fossils. In: W. H. Kimbel and L. B. Martin (eds.) Species Species Concepts and Primate Evolution pp. 123–161. Plenum Press, New York.Google Scholar
  5. Albrecht, G. H., Jenkins, P. D., and Godfrey, L. R. 1990. Ecogeographic size variation among the living and subfossil prosimians of Madagascar. Am. J. Primatol. 22: 1–50.Google Scholar
  6. Andersson, M. 1994. Sexual Selection. Princeton University Press, Princeton.Google Scholar
  7. Arnold, S. J. 1994. Quantitative genetic models of sexual selection. Experientia 41: 1296–1310.Google Scholar
  8. Beard, K. C., Qi, T., Dawson, M. R., Wang, B., and Li, C. 1994. A diverse new primate fauna from middle Eocene fissure-fillings in southeastern China. Nature 368: 604–609.Google Scholar
  9. Blumenberg, B. 1981. Observations on the paleoecology, population structure and body weight of some Tertiary hominoids. J. Hum. Evol. 10: 543–564.Google Scholar
  10. Blumbenberg, B. 1984. Allometry and evolution of Tertiary hominoids. J. Hum. Evol. 13: 613–676.Google Scholar
  11. Brace, C. L. 1972. Sexual dimorphism in human evolution. Yearb. Phys. Anthropol. 16: 31–49.Google Scholar
  12. Brace, C. L., and Ryan, A. S. 1980. Sexual dimorphism and human tooth size differences. J. Hum.Evol. 9: 417–435.Google Scholar
  13. Brennan, E. J. 1985. De Brazza’s monkeys (Cercopithecus neglectus) in Kenya: census, distribution and conservation. Am. J. Primatol. 8: 269–277.Google Scholar
  14. Cheverud, J. M., Dow, M. M., and Leutenegger, W. 1985. The quantitative assessment of phylogenetic constraints in comparative analysis: Sexual dimorphism in body weight among primates. Evolution 38: 1335–1351.Google Scholar
  15. Glutton-Brock, T. M., and Harvey, P. H. 1978. Mammals, resources and reproductive strategies. Nature 373: 191–195.Google Scholar
  16. Clutton-Brock, T. H., and Harvey, P. H. 1980. Primates, brains and ecology. J. Zool. London 190: 309–323.Google Scholar
  17. Clutton-Brock, T. M., Harvey, P. H., and Rudder, B. 1977. Sexual dimorphism, socionomic sex ratio and body weight in primates. Nature 269: 797–800.Google Scholar
  18. Cords, M. 1987. Forest guenons and patas monkeys: male-male competition in one-male groups. In: B. B. Smuts, D. L. Cheney, R. M. Seyfarth, R. W. Wrangham, and T. T. Struhsaker (eds.) Primate Societies pp. 98–111. University of Chicago Press, Chicago.Google Scholar
  19. Cords, M. 1988. Mating systems of forest guenons: a preliminary review. In: A. Gautier-Hion, F. Bourliere, J. Gautier, and J. Kingdon (eds.) A Primate Radiation: Evolutionary Biology of the African Guenons pp. 323–339. Cambridge University Press, Cambridge.Google Scholar
  20. Crook, J. H. 1972. Sexual selection, sexual dimorphism, and social organization in the primates. In: B. Campbell (ed.) Sexual Selection and the Descent of Man 1871–1971, pp. 231–281. Aldine Publishing Company, Chicago.Google Scholar
  21. Darwin, C. 1871. The Descent of Man and Selection in Relation to Sex. J. Murray, London.Google Scholar
  22. Di Fiore, A. and Rendall, D. 1994. Evolution of social organization: a reappraisal by using phylogenetic methods. Proc. Natl. Acad. Sci. USA 91: 994–995.Google Scholar
  23. Ely, J., and Kurland, J. A. 1989. Spatial autocorrelation, phylogenetic constraints, and the causes of sexual dimorphism in primates. Int. J. Primatol. 10: 151–171.Google Scholar
  24. Emlen, S., and Oring, L. 1977. Ecology, sexual selection and the evolution of mating systems. Science 197:215–224.Google Scholar
  25. Felsenstein, J. 1985. Phylogenies and the comparative method. Am. Nat. 125: 1–15.Google Scholar
  26. Fleagle, J. G. 1998. Primate Adaptation and Evolution 2nd Edition, Academic Press, New York.Google Scholar
  27. Fleagle, J. G., Kay, R. F., and Simons. 1980. Sexual dimorphism in early anthropoids. Nature 287: 328–330.Google Scholar
  28. Foley, R. A., and Lee, P. C. 1989. Finite social space, evolutionary pathways, and reconstructing hominid behavior. Science 243: 901–906.Google Scholar
  29. Fooden, J. 1995. Systematic review of southeast Asian Longtail Macaques Macaca fascicularis (Raffles, [1821]) Fieldiana Zoology New Series #81. Field Museum of Natural History, Chicago.Google Scholar
  30. Ford, S. M. 1994. Evolution of sexual dimorphism in body weight in platyrrhines. Am. J. Primatol. 34: 221–224.Google Scholar
  31. Frayer, D. W. 1980. Sexual dimorphism and cultural evolution in the late Pleistocene and Holocene of Europe. J. Hum. Evol. 9: 399–415.Google Scholar
  32. Gaulin, S. J. C., and Sailer, L. D. 1984. Sexual dimorphism in weight among primates: the relative impact of allometry and sexual selection. Int. J. Primatol. 5: 515–535.Google Scholar
  33. Gautier-Hion, A. 1975. Dimorphisme sexuel et organization sociale chez les cercopithècinès forestiers africains. Mammalia 39: 365–374.Google Scholar
  34. Gingerich, P. D. 1981. Cranial morphology and adaptations in Eocene Adapidae. I. Sexual dimorphism in Adapis magnus and Adapis parisiensis. Am. J. Phys. Anthropol. 56: 217–234.Google Scholar
  35. Gingerich, P. D. 1995. Sexual dimorphism in earliest Eocene Cantius torresi (Mammalia, Primates,Adapoidea). Cont. Mus. Paleontol. Univ. Mich. 29: 185–199.Google Scholar
  36. Gittleman, J. L., and van Valkenburg, B. 1997. Sexual dimorphism in the canines and skulls of carnivores: effects of size, phylogeny, and behavioural ecology.]. Zool. London. 242: 97–117.Google Scholar
  37. Godfrey, L. R., Lyon, S. K, and Sutherland, M. R. 1993. Sexual dimorphism in large-bodied primates: the case of the subfossil lemurs. Am. J. Phys. Anthropol. 90: 315–334.Google Scholar
  38. Greenfield, L. O. 1992a. Origin of the human canine: a new solution to an old enigma. Yearb. Phys.Anthropol. 35: 153–185.Google Scholar
  39. Greenfield, L. O. 1992b. Relative canine size, behavior and diet in male ceboids. J. Hum. Evol. 23: 469–480.Google Scholar
  40. Greenfield, L. O. 1996. Correlated response of homologous characteristics in the anthropoid anterior dentition. J. Hum. Evol. 31: 1–19.Google Scholar
  41. Greenfield, L. O. 1998. Canine tip wear in male and female anthropoids. Am. J. Phys. Anthropol. 107: 87–96.Google Scholar
  42. Greenfield, L. O., and Washburn, A. 1991. Polymorphic aspects of male anthropoid canines. Am. J. Phys. Anthropol. 84: 17–34.Google Scholar
  43. Harvey, P. H., Kavanagh, M., and Clutton-Brock, T. H. 1978a. Canine tooth size in female primates. Nature 276: 817–818.Google Scholar
  44. Harvey, P. H., Kavanagh, M., and Clutton-Brock, T. H. 1978b. Sexual dimorphism in primate teeth. J. Zool. (London) 186: 474–485.Google Scholar
  45. Harvey, P. H., Martin, R. D., and Clutton-Brock, T. H. (1987) Life histories in comparative perspective. In: B. B. Smuts, D. L. Cheney, R. M. Seyfarth, R. W. Wrangham, and T. T. Struhsaker (eds.) Primate Societies pp. 181–196. University of Chicago Press, Chicago.Google Scholar
  46. Hayes, V. J., Freedman, L., and Oxnard, C. E. 1995. The differential expression of dental sexual dimorphism in subspecies of Colobus guereza. Int. J. Primatol. 16: 971–996.Google Scholar
  47. Josephson, S. C., Juell, K. E., and Rogers, A. R. 1997. Estimating sexual dimorphism by method-of-moments. Am. J. Phys. Anthropol. 100: 191–206.Google Scholar
  48. Kappeler, P. M. 1990. The evolution of sexual size dimorphism in prosimian primates. Am. J. Primatol. 21: 201–214.Google Scholar
  49. Kappeler, P. M. 1991. Patterns of sexual dimorphism in body weight among prosimian primates. Folia Primatol. 57: 132–146.Google Scholar
  50. Kappeler, P. M. 1996. Intrasexual selection and phylogenetic constraints in the evolution of sexual canine dimorphism in strepsirhine primates. J.Evol. Biol. 9: 43–65.Google Scholar
  51. Kappelman, J. 1996. The evolution of body mass and relative brain size in fossil hominids./ Hum. Evol. 30: 243–276.Google Scholar
  52. Kay, R. F. 1982. Sivapithecus simonsi a new species of Miocene hominoid, with comments on the phylogenetic status of Ramapithecinae. Int. J. Primatol. 3: 113–173.Google Scholar
  53. Kay, R. F., and Cartmill, M. 1977. Cranial morphology and adaptations of Palaechthon nacimienti and other Paromomyidae (Plesiadapoidea, ? Primates), with a description of a new genus and species. J. Hum. Evol. 6: 19–53.Google Scholar
  54. Kay, R. F., Plavcan, J. M., Glander, K. E., and Wright, P. C. 1988. Sexual selection and canine dimorphism in New World monkeys. Am. J. Phys. Anthropol. 77: 385–397.Google Scholar
  55. Kay, R. F., Ross, C. F., and Williams, B. A. 1997. Anthropoid origins. Science 275: 797–804.Google Scholar
  56. Kelley, J. 1993. Taxonomic implications of sexual dimorphism in Lufengpithecus. In: W. H. Kimbel and L. B. Martin(eds.), Species, Species Concepts, and Primate Evolution, pp. 429–458. Plenum Press, New York.Google Scholar
  57. Kelley, J., and Plavcan, J. M. 1998. A simulation test of hominoid species number at Lufeng, China: implications for the use of the coefficient of variation in paleotaxonomy. J. Hum. Evol. 35: 577–596.Google Scholar
  58. Kendall, M., and Stuart, A. 1954. The Advanced Theory of Statistics Vol. 1. MacMillan Publishing, New York.Google Scholar
  59. Kinzey, W. G. (ed.). 1987. The Evolution of Human Behavior. State University of New York Press, Albany.Google Scholar
  60. Konigsberg, L. W., Hens, S. M., Jantz, L. M., and Jungers, W. L. 1998. Stature estimation and calibration: bayesian and maximum likelihood perspectives in physical anthropology. Yearb. Phys. Anthropol. 41: 65–92.Google Scholar
  61. Krishtalka, L., Stucky, R. K., and Beard, K. C. 1991. The earliest fossil evidence for sexual dimorphism in primates. Proc. Natl. Acad. Sci. USA 87: 5223–5226.Google Scholar
  62. Lague, M. R., and Jungers, W. L. 1999. Patterns of sexual dimorphism in the hominoid distal humerus. J. Hum. Evol. 36: 379–399.Google Scholar
  63. Lande, R. 1980. Sexual dimorphism, sexual selection, and adaptation in polygenic characters. Evolution 34: 292–305.Google Scholar
  64. Leigh, S. R. 1992. Patterns of variation in the ontogeny of primate body size dimorphism. J. Hum. Evol. 23: 27–50.Google Scholar
  65. Leigh, S. R. 1995a. Ontogeny and the evolution of body size dimorphism in primates. Anthropologie 33: 17–28.Google Scholar
  66. Leigh, S. R. 1995b. Socioecology and the ontogeny of sexual size dimorphism in anthropoid primates. Am. J. Phys. Anthropol. 97: 339–356.Google Scholar
  67. Leigh, S. R., and Shea, B. T. 1995. Ontogeny and the evolution of adult body size dimorphism in apes. Am. J. Primatol. 36: 37–60.Google Scholar
  68. Leigh, S. R., and Terranova, C. J. 1998. Comparative perspectives on bimaturism, ontogeny, and dimorphism in lemurid primates. Int. J. Primatol. 19: 723–749.Google Scholar
  69. Leutenegger, W., and Cheverud, J. 1982. Correlates of sexual dimorphism in primates: ecological and size variables. Int. J. Primatol. 3: 387–402.Google Scholar
  70. Leutenegger, W., and Cheverud, J. M. 1985. Sexual dimorphism in primates. The effects of size. In: W. L. Jungers (ed.) Size and Scaling in Primate Biology pp. 33–50. Plenum Press, New York.Google Scholar
  71. Leutenegger, W., and Kelly, J.T. 1977. Relationship of sexual dimorphism in canine size and body size to social, behavioral, and ecological correlates in anthropoid primates. Primates 18: 117–136.Google Scholar
  72. Leutenegger, W., and Larson, S. 1985. Sexual dimorphism in the postcranial skeleton of New World Primates. Folia Primatol. 44: 82–95.Google Scholar
  73. Leutenegger, W. and Lubach, G. 1987. Sexual dimorphism, mating system, and effect of phylogeny in De Brazza’s monkey (Cercopithecus neglectus). Am. J. Primatol. 13: 171–179.Google Scholar
  74. Leutenegger, W., and Shell, B. 1987. Variability and sexual dimorphism in canine size of Australopithecus and extant hominoids. J. Hum. Evol. 16: 359–367.Google Scholar
  75. Lieberman, S. S., Gelvin, B. R., and Oxnard, C. E. 1985. Dental sexual dimorphisms in some extant hominoids and ramapithecines from China: A quantitative approach. Am. J. Primatol. 9: 305–326.Google Scholar
  76. Lockwood, C. A. 1999. Sexual dimorphism in the face of Australopithecus africanus. Am. J. Phys.Anthropol. 108: 97–127.Google Scholar
  77. Lovejoy, C. O. 1981. The origin of man. Science 211: 341–350.Google Scholar
  78. Lovejoy, C. O., Kern, K. F., Simpson, S. W., and Meindl, R. S. 1989. A new method for estimation of skeletal dimorphism in fossil samples with an application to Australopithecus afarensis. In: G. Giacobini (ed.), Hominidae: Proceedings of the 2nd International Congress of Human Paleontology, pp. 103–108. Jaca Book, Milan.Google Scholar
  79. Lucas, P. W., Corlett, R. T., and Luke, D. A. 1986. Sexual dimorphism in tooth size in anthropoids. Hum. Evol. 1: 23–39.Google Scholar
  80. Martin, R. D., Wilner, L. A., and Dettler, A. 1994. The evolution of sexual size dimorphism in primates. In: R. V. Short and E. Balaban (eds.) The Differences Between the Sexes pp. 159–200. Cambridge University Press, Cambridge.Google Scholar
  81. Masterson, T. J., and Hartwig, W. C. 1998. Degrees of sexual dimorphism in Cebus and other New World monkeys. Am. J. Phys. Anthropol. 107: 243–256.Google Scholar
  82. McHenry, H. M. 1991. Sexual dimorphism in Australopithecus afarensis. J. Hum. Evol. 20: 21–32.Google Scholar
  83. McHenry, H. M. 1992. Body size and proportions in early hominids. Am. J. Phys. Anthropol. 87: 407–431.Google Scholar
  84. McHenry, H. M. 1994a. Behavioral ecological implications of early hominid body size. J. Hum. Evol. 27: 77–87.Google Scholar
  85. McHenry, H. M. 1994b. Sexual dimorphism in fossil hominids and its sociological implications. In: S. Shennan and J. Steele (eds.) Power Sex and Tradition: The Archeology of Human Ancestry pp. 91–109. Routledge and Kegan Paul, London.Google Scholar
  86. McHenry, H. M., and Berger, L. R. 1998. Body proportions in Australopithecus afarensis and A. africanus and the origin of the genus Homo. J. Hum. Evol. 35: 1–22.Google Scholar
  87. Mitani, J., Gros-Louis, J., and Richards, A. F. 1996. Sexual dimorphism, the operational sex ratio, and the intensity of male competition in polygynous primates. Am. Nat. 147: 966–980.Google Scholar
  88. Moore, J. 1997. Savanna chimpanzees, referential models and the last common ancestor. In: W. C. McGrew, L. F. Marchant, and T. Nishida (eds.) Great Ape Societies pp. 275–292. Cambridge University Press, Cambridge.Google Scholar
  89. O’Higgins. P. O., and Dryden, I. L. 1993. Sexual dimorphism in hominoids: further studies of craniofacial shape differences in Pan Gorilla and Pongo. J. Hum. Evol. 24: 183–205.Google Scholar
  90. Oxnard, C. E. 1984. The Order of Man. Yale University Press, New Haven.Google Scholar
  91. Oxnard, C. E., Lieberman, S. S., and Gelvin, B. R. 1985. Sexual dimorphisms in dental dimensions of higher primates. Am. J. Primatol. 8: 127–152.Google Scholar
  92. Pagel, M. 1992. A method for the analysis of comparative data. J. Theor. Biol. 156: 431–442.Google Scholar
  93. Philips-Conroy, J. E., and Jolly, C. J. 1981. Sexual dimorphism in two subspecies of Ethiopian baboons (Papio hamadryas) and their hybrids. Am. J. Phys. Anthropol. 56: 115–129.Google Scholar
  94. Pickford, M. 1986. On the origins of body size dimorphism in primates. In: M. Pickford and B. Chiarelli (eds.) Sexual Dimorphism in Living and Fossil Primates pp. 77–91. Il Sedicessimo,Firenze.Google Scholar
  95. Plavcan, J. M. 1990. Sexual Dimorphism in the Dentition of Extant Anthropoid Primates. Ph.D. Dissertation. University Microfilms, Ann Arbor.Google Scholar
  96. Plavcan, J. M. 1993. Canine size and shape in male anthropoid primates. Am. J. Phys. Anthropol. 92: 201–216.Google Scholar
  97. Plavcan, J. M. 1994. Comparison of four simple methods for estimating sexual dimorphism in fossils. Am. J. Phys. Anthropol. 94: 465–476.Google Scholar
  98. Plavcan, J. M. 1998. Correlated response, competition, and female canine size in primates. Am. J. Phys. Anthropol. 107: 401–416.Google Scholar
  99. Plavcan, J. M., and Kelley, J. 1996. Evaluating the “dual selection” hypothesis of canine reduction. Am. J. Phys. Anthropol. 99:379–387.Google Scholar
  100. Plavcan, J. M., and van Schaik, C. P. 1992. Intrasexual competition and canine dimorphism in anthropoid primates. Am. J. Phys. Anthropol. 87: 461–477.Google Scholar
  101. Plavcan, J. M., and van Schaik, C. P. 1994. Canine dimorphism. Evol. Anthropol. 2: 208–214.Google Scholar
  102. Plavcan, J. M., and van Schaik, C. P. 1997a. Interpreting hominid behavior on the basis of sexual dimorphism./ Hum. Evol. 32: 345–374.Google Scholar
  103. Plavcan, J. M., and van Schaik, C. P. 1997b. Intrasexual competition and body weight dimorphism in anthropoid primates. Am. J. Phys. Anthropol. 103: 37–68.Google Scholar
  104. Plavcan, J. M., van Schaik, C. P., and Kappeler, P. M. 1995. Competition, coalitions and canine size in primates. J. Hum. Evol. 28: 245–276.Google Scholar
  105. Ross, C. F. 1996. An adaptive explanation for the origin of the Anthropoidea (Primates). Am. J. Primatol. 40: 205–230.Google Scholar
  106. Ross, C., Williams, B., and Kay, R. F. 1998. Phylogenetic analysis of anthropoid relationships. J. Hum. Evol. 35: 221–306.Google Scholar
  107. Rowell, T. E. 1988. The social system of guenons, compared with baboons, macaques and mangabeys. In: A. Gautier-Hion, F. Bourliere, J. Gautier, and J. Kingdon (eds.) A Primate Radiation: Evolutionary Biology of the African Guenons pp. 439–451. Cambridge University Press, Cambridge.Google Scholar
  108. Rowell, T. E., and Chism, J. 1986. Sexual dimorphism and mating systems: jumping to conclusions. In: M. Pickford and B. Chiarelli (eds.) Sexual Dimorphism in Living and Fossil Primates pp. 107–111. Il Sedicesimo, Firenze.Google Scholar
  109. Shea, B. T., Leigh, S. R., and Groves, C. P. 1993. Multivariate craniometric variation in chimpanzees: implications for species identification. In: W. L. Kimbel and L. B. Martin (eds.) Species Species Concepts and Primate Evolution, pp. 265–296. Plenum Press, New York.Google Scholar
  110. Simons, E. L., and Rasmussen, D. T. 1996. Skull of Catopithecus brown an early Tertiary catarrhine. Am. J. Phys. Anthropol. 100: 261–292.Google Scholar
  111. Simons, E. L., Plavcan, J. M., and Fleagle, J. G. 1999. Canine sexual dimorphism in Egyptian Eocene anthropoid primates: Catopithecus and Proteopithecus. Proc. Natl. Acad. Sci. USA 96: 2559–2562.Google Scholar
  112. Simpson, G. G., Roe, A., and Lewontin, R. C. 1960. Quantitative Zoology. Harcourt Brace and Co., New York.Google Scholar
  113. Smith, B. H., Crummett, T. L., and Brandt, K. L. 1994. Ages of eruption of primate teeth: a compendium for aging individuals and comparing life histories. Yearb. Phys. Anthropol. 37: 177–231.Google Scholar
  114. Smith, R. J. 1981. Interspecific scaling of maxillary canine size and shape in female primates: relationships to social structure and diet. J.Hum. Evol. 10: 165–173.Google Scholar
  115. Smith, R. J. 1994. Regression models for prediction equations. J. Hum. Evol. 26: 239–244.Google Scholar
  116. Smith. R. J. 1996. Biology and body size in human evolution: statistical inference misapplied. Curr. Anthropol. 37: 451–481.Google Scholar
  117. Smith, R. J., and Jungers, W. L. 1997. Body mass in comparative primatology. J. Hum. Evol. 32: 523–559.Google Scholar
  118. Smuts, B. B., Cheney, D. L., Seyfarth, R. M., Wrangham, R. W., and Struhsaker, T. T. (1987) Primate Societies. University of Chicago Press, Chicago.Google Scholar
  119. Struhsaker, T. T., and Leland, L. 1987. Colobines: infanticide by adult males. In: B. B. Smuts, D.L. Cheney, R. M. Seyfarth, R. W. Wrangham, and T. T. Struhsaker (eds.) Primate Societies pp. 83–97. The University of Chicago Press, Chicago.Google Scholar
  120. Turner, T. R., Anapol, F., and Jolly, C. F. 1994. Body weights of adult vervet monkeys (Cercopithecus aethiops) at four sites in Kenya. Folia Primatol. 63: 177–179.Google Scholar
  121. Uchida, A. 1998a. Variation in tooth morphology of Gorilla gorilla. J. Hum. Evol. 34: 55–70.Google Scholar
  122. Uchida, A. 1998b. Variation in tooth morphology of Pongo pygmaeus. J. Hum. Evol. 34: 71–79.Google Scholar
  123. Ungar, P. S., and Kay, R. F. 1995. The dietary adaptations of European Miocene catarrhines. Proc.Natl. Acad. Sci USA 92: 5479–5481.Google Scholar
  124. Weckerly, F. W. 1998. Sexual-seize dimorphism: influence of mass and mating systems in the most dimorphic mammals. J. Mamm. 79: 33–52.Google Scholar
  125. Wilkinson, L. 1990. SYGRAPH: The System for Graphics. SYSTAT, Inc., Evanston.Google Scholar
  126. Wood, B. 1976. The nature and basis of sexual dimorphism in the primate skeleton. J. Zool. (London) 180: 15–34.Google Scholar
  127. Wood, B. A., Li, Y., and Willoughby C. 1991. Intraspecific variation and sexual dimorphism in cranial and dental variables among higher primates and their bearing on the hominid fossil record. J. Anat. 174: 185–205.Google Scholar
  128. Wrangham, R. W. 1980. An ecological model of female-bonded primate groups. Behaviour 75: 262–300.Google Scholar
  129. Wrangham, R. W. 1987. The significance of african apes for reconstructing human social evolution. In: W. G. Kinzey (ed.) The Evolution of Human Behavior pp. 51–71. State University of New York Press, Albany.Google Scholar
  130. Zihlman, A. 1997. Reconstructions reconsidered: chimpanzee models and human evolution. In: W. C. McGrew, L. F. Marchant, and T. Nishida (eds.) Great Ape Societies pp. 293–304. Cambridge University Press, Cambridge.Google Scholar

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© Springer Science+Business Media New York 2002

Authors and Affiliations

  • J. Michael Plavcan
    • 1
  1. 1.Department of AnatomyNew York College of Osteopathic MedicineOld WestburyUSA

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