Dental topography and human evolution with comments on the diets of Australopithecus africanus and Paranthropus


Dental functional morphology can inform us on the dietaryadaptations of early hominins and other fossil primates. Traditionalapproaches to understanding dental form-function relationships haverelied mostly on unworn teeth for analysis. This has limited oursamples and our understanding of how teeth are adapted to wear in amanner that keeps them mechanically efficient for chewing. Thispaper reviews a relatively new tool for the study of occlusalfunctional morphology, dental topographic analysis. Thislandmark-free, three-dimensional approach involves the creation andmeasurement of digital models of teeth using point cloud data andGeographic Information Systems software. Three examples arepresented. First, a study of living great apes is reviewed to showthat worn teeth can be included in the study of dental topography,and that species with different diets have corresponding andpredictable differences in the shapes of their molars at comparablestages of tooth wear. Second, a longitudinal study of howlingmonkeys is summarized to demonstrate that different individualswithin this species have consistent changes in crown shape as theirteeth wear down. This suggests species-specific wear patterns, anecessary prerequisite for the inference of function from form ofworn fossil teeth. Third, a new dental topographic analysis ispresented for Australopithecus africanus and Paranthropusrobustus to illustrate that this approach can offer insights intothe dietary adaptations of early hominins and other fossil primates.Results presented here confirm that the A. africanus and P. robustus differed in their dietary adaptations. The degree ofdifference between their occlusal morphologies is on the orderexpected of species that often eat similar foods, but differ at “crunch” times. Dental topography data suggest that P.robustus probably fell back more on hard, brittle items whereasA. africanus relied on tougher, more elastic foods when preferred resources were less available.


dental functional morphology early hominin dietary adaptations 


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  1. Aguirre de Enriquez, E., Blumenberg, B., Collins, D., Delson, E., Howells, W.W., Humphreys, A.J.B., Kress, J.H., Malik, S.C., Partridge, T.C., Poirier, F.E., Raemsch, B.E., Sharma, A., Tobias, P.V., Todd, N.B., Wolpoff, M.H., Zihlman, A., Butzer, K.W., Blumenberg, B., Tuttle, R., 1974. Discussion: recent thinking on human evolution. Current Anthropolgy 15, 398–426.Google Scholar
  2. Anthony, M.R.L., Kay, R.F., 1993. Tooth form and diet in ateline and alouattine primates: reflections on the comparative method. American Journal of Science 293A, 356–382.Google Scholar
  3. Archer, D., Sanson, G., 2002. Form and function of the selenodont molar in southern African ruminants in relation to their feeding habits. Journal of Zoology 257, 13–26.Google Scholar
  4. Bjørndal, L., Carlsen, O., Thuesen, G., Darvann, T., Kreiborg, S., 1999. External and internal macrotomography in 3D-reconstructructed maxillary molars using computerized X-ray microtomography. International Endodontic. Journal 32, 3–9.Google Scholar
  5. Clarke, M.R., Crockett, C.M., Zucker, E.L., Zaldivar, M., 2002. Mantled howler population of Hacienda La Pacifica, Costa Rica, between1991 and1998: effects of deforestation. American Journal of Primatology 56, 155–163.Google Scholar
  6. Clarke, M.R., Glander, K.E., 1984. Female reproductive success in a group of free-ranging howling monkeys (Alouatta palliata) in Costa Rica. In: Small, M.F. (Eds.), Female Primates: Studies by Female Primatologists. Alan R. Liss, New York, pp. 111–126.Google Scholar
  7. Clarke, M.R., Glander, K.E., Zucker, E.L., 1998. Infant-nonmother interactions of free-ranging mantled howlers (Alouatta palliata) in Costa Rica. International Journal of Primatology 19, 451–472.Google Scholar
  8. Cope, E.D., 1883. On the trituberculate type of molar tooth in the Mammalia. Paleontological Bulletin Number 37. Proceedings of the American Philosophical Society 21, 324–326.Google Scholar
  9. Crompton, A.W., Sita-Lumsden, A.G., 1970. Func-tional significance of therian molar pattern. Nature 227, 197–199.Google Scholar
  10. Cuvier, G., 1863. The Animal Kingdom. London.Google Scholar
  11. Daegling, D.J., Grine, F.E., 1990. Biomechanics of australopithecine mandibles from computed tomography. American Journal of Physical Anthropology 81, 211–211.Google Scholar
  12. Demes, B., Creel, N., 1988. Bite force, diet, and cranial morphology of fossil hominids. Journal of Human Evolution 17, 657–670.Google Scholar
  13. Dennis, J.C., 2002. Dental topography of Alouatta palliata (the Mantled Howling Monkey). M.A. Thesis, University of Arkansas.Google Scholar
  14. Dennis, J.C., Ungar, P.S., Teaford, M.F., Glander, K.E., 2004. Dental topography and molar wear in Alouatta palliata from Costa Rica. American Journal of Physical Anthropology 125,152–161.Google Scholar
  15. Doran, D.M., McNeilage, A., Greer, D., Bocian, C., Mehlman, P., Shah, N., 2002. Western lowland gorilla diet and resource availability: new evidence, cross-site comparisons, and reflections on indirect sampling methods. American Journal of Primatology 58, 91–116.Google Scholar
  16. Du Brul, E.L., 1977. Early hominid feeding mechanisms. American Journal of Physical Anthropology 47, 305–320.Google Scholar
  17. Eguchi, S., Townsend, G.C., Richards, L.C., Hughes, T., Kasai, K., 2004. Genetic contribution to dental arch size variation in Australian twins. Archives of Oral Biology 49, 1015–1024.Google Scholar
  18. Fleagle, J.G., 1999. Primate Adaptation and Evolution (2nd Edition). Academic Press, New York.Google Scholar
  19. Frazzetta, T.H., 1988. The mechanics of cutting and the form of shark teeth (Chondrichthyes, Elasmobranchii). Zoomorphology 108, 93–107.Google Scholar
  20. Gembressi, V., 2004. Dental wear analysis on the species Cebus apella using geographic information systems technology. B.A. Thesis, Stony Brook University.Google Scholar
  21. Glander, K.E., 1978. Howling monkey feeding behavior and plant secondary compounds: a study of strategies. In: Montgomery, G.G. (Eds.), The Ecology of Arboreal Folivores. Smithsonian Institution Press, Washington, D.C., pp. 561–573.Google Scholar
  22. Glander, K.E., Fedigan, L.M., Fedigan, L., Chapman, C., 1991. Field methods for capture and measurement of three monkey species in Costa Rica. Folia Primatologica 57, 70–82.Google Scholar
  23. Glander, K.E., Whitehead, J., Schon, M., Chapman, C., Clarke, M., Milton, K., Pope, T., Estrada, A., Crockett, C., 1987. Howling monkeys: past and present. International Journal of Primatology 8, 403–403.Google Scholar
  24. Gregory, W.K., 1922. The origin and evolution of human dentition. Baltimore.Google Scholar
  25. Grine, F.E., 1981. Trophic differences between ‘gracile’ and ‘robust’ australopithecines: a scanning electron microcope analysis of occlusal events. South African Journal of Science 77, 203–230.Google Scholar
  26. Grine, F.E., 1986. Dental evidence for dietary differences in Australopithecus and Paranthropus: a quantitative analysis of permanent molar microwear. Journal of Human Evolution 15, 783–822.Google Scholar
  27. Grine, F.E., 1989. New hominid fossils from the Swartkrans Formation (1979–1986excavations): craniodental specimens. American Journal of Physical Anthropology 79, 409–449.Google Scholar
  28. Grine, F.E., 2005. Early Homo at Swartkrans, South Africa: a review of the evidence and an evaluation of recently proposed morphs. South African Journal of Science 101, 43–52.Google Scholar
  29. Grine, F.E., Kay, R.F., 1988. Early hominid diets from quantitative image analysis of dental microwear. Nature 333, 765–768.Google Scholar
  30. Grine, F.E., Ungar, P.S., Teaford, M.F., 2002. Error rates in dental microwear quantification using scanning electron microscopy. Scanning 24, 144–153.Google Scholar
  31. Groves, C.P., Napier, J.R., 1968. Dental dimensions and diet in australopithecines. Proc. VIII Int. Cong. Anthrop. Ethnological Science 3, 273–276.Google Scholar
  32. Hlusko, L.J.,2004. Protostylid variation in Australopithecus. Journal of Human Evolution 46, 579–594.Google Scholar
  33. Hunter, J., 1771. The Natural History of Human Teeth. London.Google Scholar
  34. Jernvall, J., Keranen, S.V.E., Thesleff, I., 2000. Evolutionary modification of development in mammalian teeth: quantifying gene expression patterns and topography. Proceedings of the National Academy of Sciences of the USA 97, 14444–14448.Google Scholar
  35. Jernvall, J., Selänne, L., 1999. Laser confocal microscopy and geographic information systems in the study of dental morphology. Paleontologia Electronica 2, 18 pp.Google Scholar
  36. Jolly, C.J., 1970. The seed-eaters: a new model of hominid differentiation based on a baboon analogy. Man 5, 5–26.Google Scholar
  37. Kay, R.F., 1975a.atAllometry and early hominids (comment). Science 189, 63–63.Google Scholar
  38. Kay, R.F., 1975b. Functional adaptations of primate molar teeth. American Journal of Physical Anthropology 43, 195–215.Google Scholar
  39. Kay, R.F., 1977. Evolution of molar occlusion in Cercopithecidae and early catarrhines. American Journal of Physical Anthropology 46, 327–352.Google Scholar
  40. Kay, R.F., 1978. Molar structure and diet in extant Cercopithecidae. In: Butler, P.M., Joysey, K.A. (Eds.), The Development, Function, and Evolution of Teeth. Academic Press, New York, pp. 309–339.Google Scholar
  41. Kay, R.F., 1981. The nut-crackers: a new theory of the adaptations of the Ramapithecinae. American Journal of Physical Anthropology 55, 141–151.Google Scholar
  42. Kay, R.F., 1984. On the use of anatomical features to infer foraging behavior in extinct primates. In: Rodman, P.S., Cant, J.G.H. (Eds.), Adaptations for Foraging in Nonhuman Primates: Contributions to an Organismal Biology of Prosimians, Monkeys and Apes. Columbia University Press, New York, pp. 21–53.Google Scholar
  43. Kay, R.F., 1985. Dental evidence for the diet of Australopithecus. Annual Review of Anthropology 14, 315–341.Google Scholar
  44. Kay, R.F., Covert, H.H., 1984. Anatomy and behavior of extinct primates. In: Chivers, D.J., Wood, B.A., Bilsborough, A. (Eds.), Food Acquisition and Processing in Primates. Plenum Press, New York, pp. 467–508.Google Scholar
  45. Kay, R.F., Hiiemae, K.M., 1974. Jaw movement and tooth use in recent and fossil primates. American Journal of Physical Anthropology 40, 227–256.Google Scholar
  46. Kay, R.F., Simons, E.L., 1980. The ecology of Oligocene African Anthropoidea. International Journal of Primatology 1, 21–37.Google Scholar
  47. Kay, R.F., Ungar, P.S., 1997. Dental evidence for diet in some Miocene catarrhines with comments on the effects of phylogeny on the interpretation of adaptation. In: Begun, D.R., Ward, C., Rose, M. (Eds.), Function, Phylogeny and Fossils: Miocene Hominoids and Great Ape and Human Origins. Plenum Press, New York, pp. 131–151.Google Scholar
  48. Keyser, A.W., 2000. The Drimolen skull: The most complete australopithecine cranium and mandible to date. South African Journal of Science 96, 189–193.Google Scholar
  49. King, S.J., Blanco, M.B., Godfrey, L.R., 2005a. Dietary reconstruction of Archeolemur using dental topographic analysis. American Journal of Physical Anthropology Suppl. 40, 133.Google Scholar
  50. King, S.J., Arrigo-Nelson, S.J., Pochron, S.T., Semprebon, G.M., Godfrey, L.R., Wright, P.C., Jernvall, J., 2005b. Dental senescence in a long-lived primate links infaut survival to rainfall. Proceedings of the National Academy of science of the USA 102, 16579-16583.Google Scholar
  51. Kinzey, W.G., 1978. Feeding behavior and molar features in two species of titi monkey. In: Chivers, D.J., Herbert, J. (Eds.), Recent Advances in Primatology, Volume 1, Behavior. Academic Press, New York, pp. 373–385.Google Scholar
  52. Kullmer, O., Engel, K., Ulhaas, L., Winzen, O., Schrenk, F., 2004. Occlusal fingerprint analysis (OFA): quantifying individual wear pattern of tooth crowns using optical 3-D topometry. American Journal of Physical Anthropology Suppl. 38, 130.Google Scholar
  53. Kuroda, S., 1992. Ecological interspecies relationships between gorillas and chimpanzees in the Ndoki-Nouabale Reserve, Northern Congo. In: Itoigawa, N., Sugiyama, Y., Sackett, G.P., Thompson, R.K.R. (Eds.), Topics in Primatology, Volume 2, Behavior, Ecology and Conservation. University of Tokyo Press, Tokyo, pp. 385–394.Google Scholar
  54. Lambert, J.E., Chapman, C.A., Wrangham, R.W., Conklin-Brittain, N.L., 2004. The hardness of cercopithecine foods: implications for the critical function of enamel thickness in exploiting fallback foods. American Journal of Physical Anthropology 125, 363–368.Google Scholar
  55. Lanyon, J.M., Sanson, G.D., 1986. Koala (Phascolarctos cinereus) dentition and nutrition. II. Implications of tooth wear in nutrition. Journal of Zoology 209, 169–181.Google Scholar
  56. Lucas, P.W., 2004. Dental Functional Morphology: How Teeth Work. Cambridge University Press, New York.Google Scholar
  57. Lucas, P.W., Corlett, R.T., Luke, D.A., 1985. Plio-Pleistocene hominid diets: an approach combining masticatory and ecological analysis. Journal of Human Evolution 14, 187–202.Google Scholar
  58. Lucas, P.W., Prinz, J.F., Agrawal, K.R., Bruce, I.C., 2004. Food texture and its effect on ingestion, mastication and swallowing. Journal of Texture. 35, 159–170.Google Scholar
  59. M’Kirera, F., Ungar, P.S., 2003. Occlusal relief changes with molar wear in Pan troglodytes troglodytes and Gorilla gorilla gorilla. American Journal of Primatology 60, 31–41.Google Scholar
  60. MacKinnon, J., 1977. A comparative ecology of Asian apes. Primates 18, 747–772.Google Scholar
  61. Martin-de las Heras, S., Valenzuela, A., Ogayar, C., Valverde, A.J., Torres, J.C., 2005. Computer-based production of comparison overlays from 3D-scanned dental casts for bite mark analysis. Journal of Forensic Science 50, 127–133.Google Scholar
  62. McHenry, H.J., 1988. New estimates of body weight in early hominids and their significance to encephalization and megadontia in ’robust’ australopithecines. In: Grine, F.E. (Ed.), Evolutionary History of the Robust Australopithecines. Aldine, New York, pp. 133–148.Google Scholar
  63. Meldrum, D.J., Kay, R.F., 1997. Nuciruptor rubricae, a new pitheciin seed predator from the Miocene of Colombia. American Journal of Physical Anthropology 102, 407–427.Google Scholar
  64. Nishihara, T., 1992. A preliminary report on the feeding habits of western lowland gorillas (Gorilla gorilla gorilla) in the Ndoki Forest, Northern Congo. In: Itoigawa, N., Sugiyama, Y., Sackett, G.P., Thompson, R.K.R. (Eds.), Topics in Primatology, Volume 2, Behavior, Ecology and Conservation. University of Tokyo Press, Tokyo, pp. 225–240.Google Scholar
  65. Okada, M., Sadaki, N., Kaihara, Y., Okasa, R., Amano, H., Miura, K., Kozai, K., 2003. Oral findings in Noonan syndrome: report of a case. Journal of Oral Sciences 45, 117–121.Google Scholar
  66. Olejniczak, A.J., Grine, F.E., Martin, L.B., 2007. Micro-computed tomography of primate molars: methodological aspects of three-dimensional data collection. In: Bailey, S.E., Hublin, J.-J. (Eds.), Dental Perspectives on Human Evolution: State of the Art Research in Dental Paleoanthropology. Springer, Dordrecht.Google Scholar
  67. Osborn, H.F., 1907. Evolution of Mammalian Molar Teeth to and from the Triangular Type. The MacMillan Company, New York.Google Scholar
  68. Owen, R., 1840–1841. Odontography. Hippolyte Bailliere, London.Google Scholar
  69. Peters, C.R., 1981. Robust vs. gracile early hominid masticatory capabilities: the advantages of the megadonts. In: Mai, L.L., Shanklin, E., Sussman, R.W. (Eds.), The Perception of Human Evolution. University of California Press, Los Angeles, pp. 161–181.Google Scholar
  70. Pilbeam, D., Gould, S.J., 1974. Size and scaling in human evolution. Science 186, 892–901.Google Scholar
  71. Rak, Y., 1983. The Australopithecine Face. Academic Press, New York.Google Scholar
  72. Remis, M.J., 1997. Western lowland gorillas (Gorilla gorilla gorilla) as seasonal frugivores: use of variable resources. American Journal of Primatology 43, 87–109.Google Scholar
  73. Remis, M.J., 2002. Food preferences among captive western gorillas (Gorilla gorilla gorilla) and chimpanzees (Pan troglodytes). International Journal of Primatology 23, 231–249.Google Scholar
  74. Robinson, B.W., Wilson, D.S., 1998. Optimal foraging, specialization, and a solution to Liem’s paradox. American Naturalist 151, 223–235.Google Scholar
  75. Robinson, J.T., 1954. Prehominid dentition and hominid evolution. Evolution 8, 324–334.Google Scholar
  76. Robinson, J.T., 1963. Adaptive radiation in the australopithecines and the origin of man. In: Howell, F.C., Bourliere, F. (Eds.), African Ecology and Human Evolution. Aldine de Gruyter, Chicago, pp. 385–416.Google Scholar
  77. Rodman, P.S., 1977. Feeding behaviour of orangutans of the Kutai Nature Reserve, East Kalimantan. In: Clutton-Brock, T.H. (Eds.), Primate Ecology: Studies of Feeding and Ranging Behaviour in Lemurs, Monkeys and Apes. Academic Press, London, pp. 383–413.Google Scholar
  78. Rogers, M.E., Maisels, F., Williamson, E.A., Tutin, C.E., Fernandez, M., 1992. Nutritional aspects of gorilla food choice in the Lopé Reserve, Gabon. In: Itoigawa, N., Sugiyama, Y., Sackett, G.P., Thompson, R.K.R. (Eds.), Topics in Primatology, Volume 2, Behavior, Ecology and Conservation. University of Tokyo, Tokyo, pp. 267–281.Google Scholar
  79. Rosenberger, A.L., Kinzey, W.G., 1976. Functional patterns of molar occlusion in platyrrhine primates. American Journal of Physical Anthropology 45, 281–297.Google Scholar
  80. Ross, C.F., 2000. Into the light: the origin of Anthropoidea. Annual Review of Anthropology 29, 147–194.Google Scholar
  81. Sakka, M., 1984. Cranial morphology and masticatory adaptations. In: Chivers, D.J., Wood, B.A., Bilsborough, A. (Eds.), Food Acquisition and Processing in Primates. Plenum, New York, pp. 415–427.Google Scholar
  82. Scott, E.C., 1979. Dental wear scoring technique. American Journal of Physical Anthropology 51, 213–217.Google Scholar
  83. Scott, R.S., Ungar, P.S., Bergstrom, T.S., Brown, C.A., Grine, F.E., Teaford, M.F., Walker, A., 2005. Dental microwear texture analysis reflects diets of living primates and fossil hominins. Nature 436, 693–695.Google Scholar
  84. Seligsohn, D., Szalay, F.S., 1978. Relationship between natural selection and dental morphology: tooth function and diet in Lepilemur and Hapalemur. In: Butler, P.M. Joysey, K.A. (Eds.), Development, Function and Evolution of Teeth. Academic Press, New York, pp. 289–307.Google Scholar
  85. Smith, E., 1999. A functional analysis of molar morphometrics in living and fossil hominoids using 2-D digitized images. Ph.D. Dissertation, University of Toronto.Google Scholar
  86. Spears, I.R., Crompton, R.H., 1996. The mechanical significance of the occlusal geometry of great ape molars in food breakdown. Journal of Human Evolution 31, 517–535.Google Scholar
  87. Stanford, C.B., Nkurunungi, J.B., 2003. Do wild chimpanzees and mountain gorillas compete for food? American Journal of Physical Anthropology Supplement 36, 198–199.Google Scholar
  88. Strait, S.G., 1993. Molar morphology and food texture among small bodied insectivorous mammals. Journal of Mammalogy 74, 391–402.Google Scholar
  89. Szalay, F.S., 1975. Hunting-scavenging protohominids: a model for hominid origins. Man 10, 420–429.Google Scholar
  90. Teaford, M.F., 1983. Differences in molar wear gradient between adult macaques and langurs. International Journal of Primatology 4, 427–444.Google Scholar
  91. Teaford, M.F., 2007. Micro-computed tomography of primate molars: methodological aspects of dental microwear and paleoanthropology: cautions and possibilities three-dimensional data collection. In: Bailey, S.E., Hublin, J.-J. (Eds.), Dental Perspectives on Human Evolution: State of the Art Research in Dental Paleoanthropology. Springer, Dordrecht.Google Scholar
  92. Teaford, M.F., Glander, K.E., 1991. Dental microwear in live, wild-trapped Alouatta palliata from Costa Rica. American Journal of Physical Anthropology 85, 313–319.Google Scholar
  93. Teaford, M.F., Glander, K.E., 1996. Dental microwear and diet in a wild population of mantled howling monkeys (Alouatta palliata). In: Norconk, M.A., Rosenberger, A.L., Garber, P.A. (Eds.), Adaptive Radiations of Neotropical Primates. Plenum Press, New York, pp. 433–449.Google Scholar
  94. Teaford, M.F., Lucas, P.W., Ungar, P.S., Glander, K.E., 2006. Mechanical defenses in leaves eaten by Costa Rican Alouatta palliata. American Journal of Physical Anthropology 129, 99–104.Google Scholar
  95. Teaford, M.F., Ungar, P.S., 2000. Diet and the evolution of the earliest human ancestors. Proceedings of the National Academy of Sciences of the USA 97, 13506–13511.Google Scholar
  96. Teaford, M.F., Ungar, P.S., 2007. Dental adaptations of African apes. In: Kenke, W., Rothe, W., Tattersall, I. (Eds.), Handbook of Paleoanthropology. Volume 1: Principles, Methods, and Approaches. Springer Verlag, Heidelberg, in press.Google Scholar
  97. Teaford, M.F., Ungar, P.S., Grine, F.E., 2002. Paleontological evidence for the diets of African Plio-Pleistocene hominins with special reference to early Homo. In: Ungar, P.S., Teaford, M.F (Eds.), Human Diet: Its Origin and Evolution. Bergin and Garvey, Westport, CT, pp. 143–166.Google Scholar
  98. Tobias, P.V., 1967. The Cranium and Maxillary Dentition of Australopithecus (Zinjanthropus) boisei. Cambridge.Google Scholar
  99. Tutin, C.E.G., Fernandez, M., 1993. Composition of the diet of chimpanzees and comparisons with that of sympatric lowland gorillas in the Lopé Reserve, Gabon. American Journal of Primatology 30, 195–211.Google Scholar
  100. Tutin, C.E.G., Fernandez, M., Rogers, M.E., Williamson, E.A., Mcgrew, W.C., 1991. Foraging profiles of sympatric lowland gorillas and chimpanzees in the Lopé Reserve, Gabon. Philosophical Transactions of the Royal Society of London B 334, 179–186.Google Scholar
  101. Tutin, C.E.G., Ham, R.M., White, L.J.T., Harrison, M.J.S., 1997. The primate community of the Lopé Reserve, Gabon: Diets, responses to fruit scarcity, and effects on biomass. American Journal of Primatology 42, 1–24.Google Scholar
  102. Ungar, P.S., 2002. Reconstructing the diets of fossil primates. In: Plavcan, J.M., Kay, R.F., Junger, W.L., van Schaik, C.P. (Eds.), Reconstructing Behavior in the Primate Fossil Record. Kluwer Academic / Plenum Publishers, New York, pp. 261–296.Google Scholar
  103. Ungar, P.S.,2004. Dental topography and diets of Australopithecus afarensis and early Homo. Journal of Human Evolution 46, 605–622.Google Scholar
  104. Ungar, P.S., 2005. Dental evidence for the diets of fossil primates from Rudabánya, northeastern Hungary with comments on extant primate analogs and “noncompetitive” sympatry. Palaeontographica Italiana 90, 97-111.Google Scholar
  105. Ungar, P.S., 2007. Dental functional morphology: the known, the unknown and the unknowable. In: Ungar, P.S. (Eds.), Early Hominin Diets: The Known, The Unknown and the Unknowable. Oxford University Press, Oxford, pp. 39-55.Google Scholar
  106. Ungar, P.S., Brown, C.A., Bergstrom, T.S., Walkers, A., 2003. Quantification of dental microwear by tandem scanning confocal microscopy and scale-sensitive fractal analyses. Scanning 25, 185–193.Google Scholar
  107. Ungar, P.S., Grine, F.E., 1991. Incisor size and wear in Australopithecus africanus and Paranthropus robustus. Journal of Human Evolution 20, 313–340.Google Scholar
  108. Ungar, P.S., Kay, R.F., 1995. The dietary adaptations of European Miocene catarrhines. Proceedings of the National Academy of Sciences of the USA 92, 5479–5481.Google Scholar
  109. Ungar, P.S., M’Kirera, F., 2003. A solution to the worn tooth conundrum in primate functional anatomy. Proceedings of the National Academy of Sciences of the USA 100, 3874–3877.Google Scholar
  110. Ungar, P.S., Taylor, S.R., 2005. Dental topographic analysis: tooth wear and function. American Journal of Physical Anthropology Suppl. 40, 210.Google Scholar
  111. Ungar, P.S., Teaford, M.F., Grine, F.E., 1999. A preliminary study of molar occlusal relief in Australopithecus africanus and Paranthropus robustus. American Journal of Physical Anthropology Suppl.28,269.Google Scholar
  112. Ungar, P.S., Teaford, M.F., Kay, R.F., 2004. Molar microwear and shearing crest development in Miocene catarrhines. Anthropos42,21–35.Google Scholar
  113. Ungar, P.S., Williamson, M., 2000. Exploring the effects of tooth wear on functional morphology: a preliminary study using dental topographic analysis. Paleontologica Electronica. 3,18pp.Google Scholar
  114. Ward, S.C., Molnar, S., 1980. Experimental stress analysis of topographic diversity in early hominid gnathic morphology. American Journal of Physical Anthropology53,383–395.Google Scholar
  115. Williams, B.A., Covert, H.H., 1994. New early Eocene anaptomorphine primate (Omomyidae) from the Washakie Basin, Wyoming, with comments on the phylogeny andpaleobiology ofanaptomorphines. American Journal of Physical Anthropology93,323–340.Google Scholar
  116. Williamson, E.A., Tutin, C.E.G., Rogers, M.E., Fernandez, M., 1990. Composition of the diet of lowland gorillas at Lopé in Gabon. American Journal of Primatology21,265–277.Google Scholar
  117. Williamson, M.D., Ungar, P.S., Teaford, M.F., Glander, K.E., 2000. Gross wear and molar morphology in Alouatta palliata: a preliminary study using dental topographic analysis. American Journal of Physical Anthropology Supplement30,323.Google Scholar
  118. Wood, B., Strait, D., 2004. Patterns of resource use in early Homo and Paranthropus. Journal of Human Evolution46,119–162.Google Scholar
  119. Wood, B.A., Abbott, S.A., Graham, S.H., 1983. Analysis of the dental morphology of Plio-Pleistocene hominids. II. Mandibular molars. Study of cusp areas, fissure pattern and cross-sectional shape of the crown. Journal of Anatomy137,287–314.Google Scholar
  120. Wood, B.A., Ellis, M., 1986. Evidence for dietary specialization in the “robust” australopithecines. Anthropos23,101–124.Google Scholar
  121. Wood, B.A., Stack, C.G., 1980. Does allometry explain the differences between gracile and robust australopithecines? American Journal of Physical Anthropology52,55–62.Google Scholar
  122. Yamashita, N., 1998. Functional dental correlates of food properties in five Malagasy lemur species. American Journal of Physical Anthropology106,169–188.Google Scholar
  123. Zuccotti, L.F., Williamson, M.D., Limp, W.F., Ungar, P.S., 1998. Technical note: Modeling primate occlusal topography using geographic information systems technology. American Journal of Physical Anthropology107,137–142.Google Scholar

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Authors and Affiliations

  1. 1.Department of AnthropologyUniversity of ArkansasOld Main 330FayettevilleUSA

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