Growth, Development, and Life History throughout the Evolution of Homo

Gary T. Schwartz
Current Anthropology
Vol. 53, No. S6, Human Biology and the Origins of Homo (December 2012), pp. S395-S408
DOI: 10.1086/667591
Stable URL:
Page Count: 14
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Growth, Development, and Life History throughout the Evolution of
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For over a century, paleoanthropologists have listed the presence of prolonged periods of gestation, growth, and maturation, extremely short interbirth intervals, and early weaning among the key features that distinguish modern humans from our extant ape cousins. Exactly when and how this particular scheduling of important developmental milestones—termed a “life history profile”—came to characterize Homo sapiens is not entirely clear. Researchers have suggested that the modern human life history profile appeared either at the base of the hominin radiation (ca. 6 Ma), with the origins of the genus Homo (ca. 2.5 Ma), or much later in time, perhaps only with H. sapiens (ca. 200–100 Ka). In this short review, evidence of the pace of growth and maturation in fossil australopiths and early members of Homo is detailed to evaluate the merits of each of these scenarios. New data on the relationship between dental development and life history in extant apes are synthesized within the context of life history theory and developmental variation across modern human groups. Future directions, including new analytical tools for extracting more refined life history parameters as well as integrative biomechanical and developmental models of facial growth are also discussed.

Notes and References

This item contains 142 references.

References Cited
  • ['Aiello,\n Leslie C., Carey Montgomery, and M. Christopher Dean. 1991. The natural history\n of deciduous tooth attrition in hominoids. Journal of Human\n Evolution 21:397–412.']
  • ['Aiello,\n Leslie C., and Jonathan C. K. Wells. 2002. Energetics and the evolution of the\n genus Homo. Annual Review of Anthropology\n 31:323–338.']
  • ['Alemseged,\n Zeresenay, Fred Spoor, William H. Kimbel, René Bobe, Denis Geraads,\n Denné Reed, and Jonathan G. Wynn. 2006. A juvenile early hominin skeleton\n from Dikika, Ethiopia. Nature 443:296–301.']
  • ['Anemone,\n Robert L., Mark P. Mooney, and Michael I. Siegel. 1996. Longitudinal study of\n dental development in chimpanzees of known chronological age: implications for\n understanding the age at death of Plio-Pleistocene hominids. American\n Journal of Physical Anthropology 99:119–133.']
  • ['Antón, Susan C. 2012. Early Homo: who, when, and where.\n Current Anthropology 53(suppl.\n 6):S278–S298.']
  • ['Antón, Susan C., and Steven R. Leigh. 2003. Growth and life history in\n Homo erectus. In Patterns of growth and development\n in the genus Homo. Jennifer L. Thompson, Gail E. Krovitz, and\n Andrew J. Nelson, eds. Pp. 219–245. Cambridge: Cambridge University\n Press.']
  • ['Asfaw,\n Berhane, Tim White, C. Owen Lovejoy, Bruce Latimer, Scott Simpson, and Gen Suwa.\n 1999. Australopithecus garhi: a new species of early hominin\n from Ethiopia. Science 284:629–635.']
  • ['Bayle,\n Priscilla, José Braga, Arnaud Mazurier, and Roberto Macchiarelli.\n 2009a. Brief communication: high-resolution assessment of\n the dental developmental pattern and characterization of tooth tissue\n proportions in the late Upper Paleolithic child from La Madeleine, France.\n American Journal of Physical Anthropology\n 138:493–498.']
  • ['———. 2009b. Dental developmental pattern of\n the Neanderthal child from Roc de Marsal: a high resolution 3D analysis.\n Journal of Human Evolution 56:66–75.']
  • ['Bayle,\n Priscilla, Roberto Macchiarelli, Erik Trinkaus, Cidaliá Duarte, Arnaud\n Mazurier, and João Zilhão. 2010. Dental maturational sequence and\n dental tissue proportions in the early Upper Paleolithic child from Abrigo do\n Lagar Velho, Portugal. Proceedings of the National Academy of Sciences\n of the USA 107:1338–1342.']
  • ['Berger, Lee\n R., Darryl J. de Ruiter, Steven E. Churchill, Peter Schmid, Kristian J. Carlson,\n Paul H. G. M. Dirks, and Job M. Kibii. 2010. Australopithecus\n sediba: a new species of Homo-like australopith\n from South Africa. Science 328:195–204.']
  • ['Beynon, A.\n David, C. Barry Clayton, Fernando V. Ramirez Rozzi, and Donald J. Reid. 1998.\n Radiographic and histological methodologies in estimating the chronology of\n crown development in some modern humans and great apes: a review with some\n applications for studies on juvenile hominids. Journal of Human\n Evolution 35:351–370.']
  • ['Beynon, A.\n David, and M. Christopher Dean. 1988. Distinct dental development patterns in\n early fossil hominids. Nature 335:509–514.']
  • ['Beynon, A.\n David, M. Christopher Dean, and Donald J. Reid. 1991. Histological study on the\n chronology of the developing dentition in gorilla and orangutan.\n American Journal of Physical Anthropology\n 86:189–203.']
  • ['Bogin,\n Barry. 1988. Patterns of human growth. Cambridge: Cambridge\n University Press.']
  • ['———. 1997. Evolutionary hypotheses for human childhood.\n Yearbook of Physical Anthropology\n 104:63–90.']
  • ['Bogin,\n Barry, and B. Holly Smith. 2000. Evolution of the human life cycle. In\n Human biology: an evolutionary and biocultural perspective.\n Sarah Stinson, Barry Bogin, Rebecca Huss-Ashmore, and Dennis O’Rourke,\n eds. Pp. 377–424. New York: Wiley-Liss.']
  • ['Boyde,\n Alan. 1963. Estimation of age at death of young human skeletal remains from\n incremental lines in dental enamel. In Third international meeting in\n forensic immunology, medicine, pathology and toxicology (London, April\n 16–24th, 1963): plenary session 2A. Pp. 36–46.\n Amsterdam: Exerpta Medica.']
  • ['———. 1964. The structure and development of mammalian enamel.\n PhD thesis, University of London.']
  • ['Bradley,\n Brenda J. 2008. Reconstructing phylogenies and phenotypes: a molecular view of\n human evolution. Journal of Anatomy\n 212:337–353.']
  • ['Breuer,\n Thomas, Mireille B. Hockemba, Claudia Olejniczak, Richard J. Parnell, and Emma\n J. Stokes. 2009. Physical maturation, life-history classes and age estimates of\n free-ranging western gorillas: insights from Mbeli Bai, Republic of Congo.\n American Journal of Primatology\n 71:106–119.']
  • ['Bromage,\n Timothy G., and M. Christopher Dean. 1985. Re-evaluation of the age at death of\n immature fossil hominids. Nature 317:525–527.']
  • ['Conroy,\n Glenn C., and Kevin L. Kuykendall. 1995. Paleopediatrics: or when did human\n infants really become human? American Journal of Physical\n Anthropology 98:121–131.']
  • ['Conroy,\n Glenn C., and C. James Mahoney. 1991. Mixed longitudinal study of dental\n emergence in the chimpanzee, Pan troglodytes (Primates,\n Pongidae). American Journal of Physical Anthropology\n 86:243–254']
  • ['Conroy,\n Glenn C., and Michael W. Vannier. 1991a. Dental development in\n South African australopithecines. 1. Problems of pattern and chronology.\n American Journal of Physical Anthropology\n 86:121–136.']
  • ['———. 1991b. Dental development in South\n African australopithecines. 2. Dental stage assessment. American Journal\n of Physical Anthropology 86:137–156.']
  • ['Coqueugniot, Hélène, and Jean-Jacques Hublin. 2007. Endocranial\n volume and brain growth in immature Neanderthals. Periodicum\n Biologorum 109:379–385.']
  • ['Dean, M.\n Christopher. 1987. The dental developmental status of six East African juvenile\n fossil hominids. Journal of Human Evolution\n 16:197–213.']
  • ['———. 1995. The nature and periodicity of incremental lines in\n the primate dentition and their relationship to periradicular bands in OH 16\n (Homo habilis). In Aspects of dental biology:\n paleontology, anthropology, and evolution. Jacopo Moggi-Cecchi, ed.\n Pp. 239–265. Florence: International Institute for the Study of\n Man.']
  • ['———. 2006. Tooth microstructure tracks the pace of human life\n history. Proceedings of the Royal Society B: Biological\n Sciences 273:2799–2802.']
  • ['———. 2010. Retrieving chronological age from dental remains\n of early fossil hominins to reconstruct human growth in the past.\n Philosophical Transactions of the Royal Society B: Biological\n Sciences 365:3397–3410.']
  • ['Dean, M.\n Christopher, A. David Beynon, J. Francis Thackeray, and Gabriele A. Macho. 1993.\n Histological reconstruction of dental developmental and age at death of a\n juvenile Paranthropus robustus specimen, SK 63, from\n Swartkrans, South Africa. American Journal of Physical\n Anthropology 91:401–419.']
  • ['Dean, M.\n Christopher, Meave G. Leakey, Donald J. Reid, Friedemann Schrenk, Gary T.\n Schwartz, Christopher Stringer, and Alan C. Walker. 2001. Growth processes in\n teeth distinguish modern humans from Homo erectus and earlier\n hominins. Nature 414:628–631.']
  • ['Dean, M.\n Christopher, and B. Holly Smith. 2009. Growth and development of the Nariokotome\n youth, KNM-WT 15000. In The first humans: origins and evolution of the\n genus Homo. Frederick E. Grine, John C. Fleagle, and Richard E.\n Leakey, eds. Pp. 101–120. New York: Springer.']
  • ['Deaner,\n Robert O., Robert A. Barton, and Carel P. van Schaik. 2003. Primate brains and\n life history: renewing the connection. In Primate life histories and\n socioecology. Peter M. Kappeler and Michael E. Pereira, eds. Pp.\n 233–265. Chicago: University of Chicago Press.']
  • ['deMenocal,\n Peter B. 1995. Plio-Pleistocene African climate. Science\n 270:53–59.']
  • ['DeSilva,\n Jeremy M. 2011. A shift toward birthing relatively large infants early in human\n evolution. Proceedings of the National Academy of Sciences of the\n USA 108:1022–1027.']
  • ['Dirks,\n Wendy. 1998. Histological reconstruction of dental development and age of death\n in a juvenile gibbon (Hylobates lar). Journal of Human\n Evolution 35:411–425.']
  • ['———. 2003. Effect of diet on dental development in four\n catarrhine primates. American Journal of Primatology\n 61:29–40.']
  • ['Dirks,\n Wendy, and Jacqui E. Bowman. 2007. Life history theory and dental development in\n four species of catarrhine primates. Journal of Human Evolution\n 53:309–320.']
  • ['Dirks,\n Wendy, Louise T. Humphrey, M. Christopher Dean, and Teresa E. Jeffries. 2010.\n The relationship of accentuated lines in enamel to weaning stress in juvenile\n baboons (Papio hamadryas anubis). Folia\n Primatologica 81:207–223.']
  • ['Godfrey,\n Laurie R., Andrew J. Petto, and Michael R. Sutherland. 2002. Dental ontogeny and\n life-history strategies: the case of the giant extinct indrioids of Madagascar.\n In Reconstructing behavior in the primate fossil record. J.\n Michael Plavcan, Richard F. Kay, William L. Jungers, and Carel P. van Schaik,\n eds. Pp. 113–157. New York: Kluwer.']
  • ['Godfrey,\n Laurie R., Karen E. Samonds, William L. Jungers, and Michael R. Sutherland.\n 2001. Teeth, brains, and primate life histories. American Journal of\n Physical Anthropology 114:192–214.']
  • ['Godfrey,\n Laurie R., Karen E. Samonds, Patricia C. Wright, and Stephen J. King. 2005.\n Schultz’s unruly rule: dental developmental sequences and schedules in\n small-bodied, folivorous lemurs. Folia Primatologica\n 6:77–99.']
  • ['Guatelli-Steinberg, Debbie. 2009. Recent studies of dental development in\n Neanderthals: implications for Neanderthal life histories. Evolutionary\n Anthropology 18:9–20.']
  • ['Guatelli-Steinberg, Debbie, Donald J. Reid, Thomas A. Bishop, and Clark Spencer\n Larsen. 2005. Anterior tooth growth periods in Neanderthals were comparable to\n those of modern humans. Proceedings of the National Academy of Sciences\n of the USA 102:14197–14202.']
  • ['Gurven,\n Michael, and Robert Walker. 2006. Energetic demands of multiple dependents and\n the evolution of slow human growth. Proceedings of the Royal Society B:\n Biological Sciences 273:835–841.']
  • ['Hamada,\n Yuzuru, Toshifumi Udono, Migaku Teramoto, and Tsutomu Sugawara. 1996. The growth\n pattern of chimpanzees: somatic growth and reproductive maturation in\n Pan troglodytes. Primates\n 37:279–295.']
  • ['Hawkes,\n Kristen. 2003. Grandmothers and the evolution of human longevity.\n American Journal of Human Biology\n 15:380–400.']
  • ['Hawkes,\n Kristen, James F. O’Connell, Nicholas G. Blurton Jones, Helen Alvarez, and\n Eric L. Charnov. 1998. Grandmothering, menopause, and the evolution of human\n life histories. Proceedings of the National Academy of Sciences of the\n USA 95:1336–1339.']
  • ['Holliday,\n Trenton W. 2012. Body size, body shape, and the circumscription of the genus\n Homo. Current Anthropology 53(suppl.\n 6):S330–S345.']
  • ['Humphrey,\n Louise T. 2010. Weaning behavior in human evolution. Seminars in\n Cellular and Developmental Biology 21:453–461.']
  • ['Humphrey,\n Louise T., M. Christopher Dean, Teresa E. Jeffries, and Malcom Penn.\n 2008a. Unlocking evidence of early diet from tooth enamel.\n Proceedings of the National Academy of Sciences of the USA\n 105:6834–6839.']
  • ['Humphrey,\n Louise T., Wendy Dirks, M. Christopher Dean, and Teresa E. Jeffries.\n 2008b. Tracking dietary transitions in weanling baboons\n using strontium/calcium ratios in enamel. Folia Primatologica\n 79:197–212.']
  • ['Janson,\n Charles H., and Carel P. van Schaik. 1993. Ecological risk aversion in juvenile\n primates: slow and steady wins the race. In Juvenile primates: life\n history, development and behavior. Michael Pereira and Lynn\n Fairbanks, eds. Pp. 57–76. New York: Oxford University Press.']
  • ['Kaplan,\n Hillard, Kim Hill, Jane Lancaster, and Ana Magdalena Hurtado. 2000. A theory of\n human life history evolution: diet, intelligence, and longevity.\n Evolutionary Anthropology 9:156–184.']
  • ['Kelley,\n Jay, and Gary T. Schwartz. 2010. Dental development and life history in living\n African and Asian apes. Proceedings of the National Academy of Sciences\n of the USA 107:1035–1040.']
  • ['———. 2012. Life-history inference in the early hominins\n Australopithecus and Paranthropus.\n International Journal of Primatology\n 33:1332–1363.']
  • ['Kimbel,\n William H. 2009. The origin of Homo. In The first\n humans: origin and early evolution of the genus Homo. Frederick E.\n Grine, John G. Fleagle, and Richard E. Leakey, eds. Pp. 31–37. New York:\n Springer.']
  • ['Kimbel,\n William H., Don C. Johanson, and Yoel Rak. 1997. Systematic assessment of a\n maxilla of Homo from Hadar, Ethiopia. American Journal\n of Physical Anthropology 103:235–262.']
  • ['Kimura,\n Tasuku, and Yuzuru Hamada. 1996. Growth of wild and laboratory born chimpanzees.\n Primates 37:237–251.']
  • ['Knott,\n Cheryl D., Melissa Emery Thompson, and Serge A. Wich. 2009. The ecology of\n reproduction in wild orangutans. In Orangutans: geographic variation in\n behavioral ecology and conservation. Serge A. Wich, S. Suci\n Utami-Atmoko, Tatang Mitra Setia, and Carel P. van Schaik, eds. Pp.\n 171–188. Oxford: Oxford University Press.']
  • ['Kuykendall,\n Kevin L., C. James Mahoney, and Glenn C. Conroy. 1992. Probit and survival\n analysis of tooth emergence ages in a mixed-longitudinal sample of chimpanzees\n (Pan troglodytes). American Journal of Physical\n Anthropology 89:379–399.']
  • ['Kuzawa,\n Christopher W., and Jared M. Bragg. 2012. Plasticity in human life history\n strategy: implications for contemporary human variation and the evolution of\n genus Homo. Current Anthropology 53(suppl.\n 6):S369–S382.']
  • ['Lacruz,\n Rodrigo S., Fernando Ramirez Rozzi, and Timothy G. Bromage. 2005. Dental enamel\n hypoplasia, age at death, and weaning in the Taung child. South African\n Journal of Science 101:567–569.']
  • ['Leakey,\n Louis S. B., Phillip V. Tobias, and John Napier. 1964. A new species of the\n genus Homo from Olduvai Gorge. Nature\n 202:7–9.']
  • ['Leigh,\n Steven R. 2001. Evolution of human growth. Evolutionary\n Anthropology 10:223–236.']
  • ['Leigh,\n Steven R., and Gregory E. Blomquist. 2007. Life history. In Primates in\n perspective. Christina J. Campbell, Agustín Fuentes,\n Katherine C. MacKinnon, Melissa Panger, and Simon K. Bearder, eds. Pp.\n 396–407. New York: Oxford University Press.']
  • ['Leigh,\n Steven R., and Paul B. Park. 1998. Evolution of human growth prolongation.\n American Journal of Physical Anthropology\n 107:331–350.']
  • ['Liversidge,\n Helen. 2003. Variation in modern human dental development. In Patterns\n of growth and development in the genus Homo. Jennifer L. Thompson,\n Gail E. Krovitz, and Andrew J. Nelson, eds. Pp. 73–113. Cambridge:\n Cambridge University Press.']
  • ['Macchiarelli, Roberto, Luca Bondioli, André Debénath, Arnaud\n Mazurier, Jean-François Tournepiche, Wendy Birch, and M. Christopher\n Dean. 2006. How Neanderthal molar teeth grew. Nature\n 444:748–751.']
  • ['Mann, Alan\n E. 1975. Some paleodemographic aspects of the South African\n Australopithecines. Philadelphia: University of Pennsylvania\n Press.']
  • ['McFarlin,\n Shannon C., Timothy G. Bromage, Alecia A. Lilly, Michael R. Cranfield, Stephen\n P. Nawrocki, Amandine Eriksen, David Hunt, Albert Ndacyayisenga, Celestin\n Kanimba Misago, and Anthony Mudakikwa. 2009. Recovery and preservation of a\n mountain gorilla skeletal resource in Rwanda. American Journal of\n Physical Anthropology 138(suppl.):257–258.']
  • ['McHenry,\n Henry M. 1992. Body size and proportions in early hominids. American\n Journal of Physical Anthropology 87:407–431.']
  • ['———. 1994. Behavioral ecological implications of early\n hominid body size. Journal of Human Evolution\n 27:77–87.']
  • ['McPherron,\n Shannon P., Zeresenay Alemseged, Curtis W. Marean, Jonathan G. Wynn,\n Denné Reed, Denis Geraads, René Bobe, and Hamdallah A.\n Béarat. 2010. Evidence for stone-tool-assisted consumption of animal\n tissues before 3.39 million years ago at Dikika, Ethiopia.\n Nature 466:857–860.']
  • ['Migliano,\n Andrea Bamberg, and Myrtille Guillon. 2012. The effects of mortality,\n subsistence, and ecology on human adult height and implications for\n Homo evolution. Current Anthropology\n 53(suppl. 6):S359–S368.']
  • ['Nettle,\n Daniel, David A. Coall, and Thomas E. Dickins. 2010. Early-life conditions and\n age at first pregnancy in British women. Proceedings of the Royal\n Society B: Biological Sciences 278:1721–1727.']
  • ['Nissen,\n Henry W., and Austin H. Riesen. 1945. The deciduous dentition of chimpanzee.\n Growth 9:265–274.']
  • ['———. 1964. The eruption of the permanent dentition of\n chimpanzee. American Journal of Physical Anthropology\n 22:285–294.']
  • ['Ogilvie,\n Marsha D., Bryan K. Curran, and Erik Trinkaus. 1989. Prevalence and patterning\n of dental enamel hypoplasia among the Neanderthals. American Journal of\n Physical Anthropology 79:25–41.']
  • ['Pettitt,\n Paul B. 2000. Neanderthal lifecycles: developmental and social phases in the\n lives of the last archaics. World Archaeology\n 31:351–366.']
  • ['Ponce de\n León, Marcia S., Lubov Golovanova, Vladimir Doronichev, Galina Romanova,\n Takeru Akazawa, Osamu Kondo, Hajime Ishida, and Christoph P. E. Zollikofer.\n 2008. Neanderthal brain size at birth provides insights into the evolution of\n human life history. Proceedings of the National Academy of Sciences of\n the USA 105:13764–13768.']
  • ['Ponce de\n León, Marcia S., and Christoph P. Zollikofer. 2001. Neanderthal cranial\n ontogeny and its implications for late hominid diversity.\n Nature 412:534–538.']
  • ['Pontzer,\n Herman. 2012. Ecological energetics in early Homo.\n Current Anthropology 53(suppl.\n 6):S346–S358.']
  • ['Potts,\n Richard. 1996. Evolution and climate variability. Science\n 273:922–923.']
  • ['———. 2012. Environmental and behavioral evidence pertaining\n to the evolution of early Homo. Current\n Anthropology 53(suppl. 6):S299–S317.']
  • ['Rak, Yoel,\n Avishag Ginzburg, and Eli Geffen. 2007. Gorilla-like anatomy on\n Australopithecus afarensis mandibles suggests Au.\n afarensis links to robust australopiths. Proceedings of the\n National Academy of Sciences of the USA\n 104:6568–6572.']
  • ['Ramirez-Rozzi, Fernando V., and José Maria Bermúdez de Castro.\n 2004. Surprisingly rapid growth in Neanderthals. Nature\n 428:936–939.']
  • ['Reid,\n Donald J., Gary T. Schwartz, Malkanthi S. Chandrasekera, and M. Christopher\n Dean. 1998. A histological reconstruction of dental development in the common\n chimpanzee, Pan troglodytes. Journal of Human\n Evolution 35:427–448.']
  • ['Richard,\n Alison F., Robert E. Dewar, Marion Schwartz, and Joelisoa Ratsirarson. 2002.\n Life in the slow lane? demography and life histories of male and female sifaka\n (Propithecus verreauxi verreauxi). Journal of\n Zoology 256:421–436.']
  • ['Robson,\n Shannen L., and Bernard A. Wood. 2008. Hominin life history: reconstruction and\n evolution. Journal of Anatomy 212:394–425.']
  • ['Roff, Derek\n A. 2002. Life history evolution. Sunderland, MA:\n Sinauer.']
  • ['Ross,\n Caroline. 1992. Environmental correlates of the intrinsic rate of natural\n increase in primates. Oecologia 90:383–390.']
  • ['———. 1998. Primate life histories.\n Evolutionary\n Anthropology 6:54–63.']
  • ['Ruff,\n Christopher B. 2002. Variation in human body size and shape. Annual\n Review of Anthropology 31:211–232.']
  • ['Ruff,\n Christopher B., and Alan C. Walker. 1993. Body size and body shape. In\n The Nariokotome Homo erectus skeleton.\n Richard E. F. Leakey and Alan C. Walker, eds. Pp. 234–265. Cambridge, MA:\n Harvard University Press.']
  • ['Ruvolo,\n Maryellen. 1994. Molecular evolutionary processes and conflicting gene trees:\n the hominoid case. American Journal of Physical Anthropology\n 94:89–113.']
  • ['Sacher,\n George A. 1959. Relationship of lifespan to brain weight and body weight in\n mammals. In The lifespan of animals. G. E. W. Wolstenholme and\n Meave O’Connor, eds. Pp. 115–133. CIBA Foundation Colloquia on\n Aging, vol. 5. London: Churchill.']
  • ['———. 1975. Maturation and longevity in relation to cranial\n capacity in hominid evolution. In Primate functional morphology and\n evolution. Russell H. Tuttle, ed. Pp. 417–441. The Hague:\n Mouton.']
  • ['———. 1978. Longevity, aging, and death: an evolutionary\n perspective. Gerontology 18:112–119.']
  • ['Sacher,\n George A., and Everett F. Staffeldt. 1974. Relation of gestation time to brain\n weight for placental mammals: implications for the theory of vertebrate growth.\n American Naturalist 108:593–616.']
  • ['Schultz,\n Adolph H. 1935. Eruption and decay of the permanent teeth in primates.\n American Journal of Physical Anthropology\n 19:489–581.']
  • ['———. 1940. Growth and development of the chimpanzee.\n Contributions to Embryology 28:1–63.']
  • ['———. 1949. Ontogenetic specializations of man. Archiv\n der Julius Klaus-Stiftung für Vererbungsforschung, Sozialanthropologie\n und Rassenhygiene 24:197–216.']
  • ['———. 1960. Age changes in primates and their modification in\n man. In Human growth. James M. Tanner, ed. Pp. 1–20.\n Oxford: Pergamon.']
  • ['Schwartz,\n Gary T., and M. Christopher Dean. 2000. Interpreting the hominid dentition:\n ontogenetic and phylogenetic aspects. In Development, growth and\n evolution: implications for the study of the hominid skeleton. Paul\n O’Higgins and Martin J. Cohen, eds. Pp. 207–233. London: Academic\n Press.']
  • ['Schwartz,\n Gary T., Patrick Mahoney, Laurie R. Godfrey, Frank P. Cuozzo, William L.\n Jungers, and Gisèle F. N. Randria. 2005. Dental development in\n Megaladapis edwardsi (Primates, Lemuriformes): implications\n for understanding life history variation in subfossil lemurs. Journal of\n Human Evolution 49:702–721.']
  • ['Schwartz,\n Gary T., Karen E. Samonds, Laurie R. Godfrey, William L. Jungers, and Elwyn L.\n Simons. 2002. Dental microstructure and life history in subfossil Malagasy\n lemurs. Proceedings of the National Academy of Sciences of the\n USA 99:6124–6129.']
  • ['Smith, B.\n Holly. 1986. Dental development in Australopithecus and early\n Homo. Nature 323:327–330.']
  • ['———. 1989. Dental development as a measure of life history\n variation in primates. Evolution 43:683–688.']
  • ['———. 1993. The physiological age of KNM-WT 15000. In\n The Nariokotome Homo erectus skeleton.\n Richard E. F. Leakey and Alan C. Walker, eds. Pp. 195–220. Cambridge, MA:\n Harvard University Press.']
  • ['———. 2000. “Schultz’s rule” and the\n evolution of tooth emergence and replacement patterns in primates and ungulates.\n In Development, function and evolution of teeth. Mark F.\n Teaford, Moya Meredith Smith, and Mark W. J. Ferguson, eds. Pp. 212–227.\n Cambridge: Cambridge University Press.']
  • ['Smith, B.\n Holly, and Christophe Boesch. 2011. Mortality and the magnitude of the\n “wild effect” in chimpanzee tooth emergence. Journal of\n Human Evolution 60:34–46.']
  • ['Smith, B.\n Holly, Tracey L. Crummett, and Kari L. Brandt. 1994. Ages of eruption of primate\n teeth: a compendium for aging individuals and comparing life histories.\n Yearbook of Physical Anthropology\n 37:177–231.']
  • ['Smith, B.\n Holly, and Robert L. Tompkins. 1995. Toward a life history of the Hominidae.\n Annual Review of Anthropology 24:257–279.']
  • ['Smith,\n Richard J., Patrick J. Gannon, and B. Holly Smith. 1995. Ontogeny of\n australopithecines and early Homo: evidence from cranial\n capacity and dental eruption. Journal of Human Evolution\n 29:155–168.']
  • ['Smith,\n Shelley. 2004. Skeletal age, dental age, and the maturation of KNM-WT 15000.\n American Journal of Physical Anthropology\n 125:105–120.']
  • ['Smith,\n Tanya M. 2006. Experimental determination of the periodicity of incremental\n features in enamel. Journal of Anatomy\n 208:99–114.']
  • ['———. 2008. Incremental dental development: methods and\n applications in hominoid evolutionary studies. Journal of Human\n Evolution 54:205–224.']
  • ['Smith,\n Tanya M., Donald J. Reid, M. Christopher Dean, Anthony J. Olejniczak, and\n Lawrence B. Martin. 2007a. Molar development in common\n chimpanzees (Pan troglodytes). Journal of Human\n Evolution 52:201–216.']
  • ['Smith,\n Tanya M., Donald J. Reid, and Joyce E. Sirianni. 2006. The accuracy of\n histological assessments of dental development and age at death. Journal\n of Anatomy 208:125–138.']
  • ['Smith,\n Tanya M., B. Holly Smith, Donald J. Reid, Heike Siedel, Linda Vigilant,\n Jean-Jacques Hublin, and Christophe Boesch. 2010a. Dental\n development of the Taï Forest chimpanzees revisited. Journal of\n Human Evolution 58:363–373.']
  • ['Smith,\n Tanya M., Paul Tafforeau, Donald J. Reid, Rainer Grün, Stephen Eggins,\n Mohamed Boutakiout, and Jean-Jacques Hublin. 2007b. Earliest\n evidence of modern human life history in North African early Homo\n sapiens. Proceedings of the National Academy of Sciences of\n the USA 104:6128–6133.']
  • ['Smith,\n Tanya M., Paul Tafforeau, Donald J. Reid, Joane Pouech, Vincent Lazzari, John P.\n Zermeno, Debbie Guatelli-Steinberg, et al. 2010b. Dental\n evidence for ontogenetic differences between modern humans and Neanderthals.\n Proceedings of the National Academy of Sciences of the USA\n 107:20923–20928.']
  • ['Smith,\n Tanya M., Michel Toussaint, Donald J. Reid, Anthony J. Olejniczak, and\n Jean-Jacques Hublin. 2007c. Rapid dental development in a\n Middle Paleolithic Belgian Neanderthal. Proceedings of the National\n Academy of Sciences of the USA 104:20220–20225.']
  • ['Spencer,\n Mark A. 1995. Masticatory system configuration and diet in anthropoid primates.\n PhD dissertation, State University of New York, Stony Brook.']
  • ['———. 1999. Constraints on masticatory system evolution in\n anthropoid primates. American Journal of Physical Anthropology\n 108:483–506.']
  • ['Spencer,\n Mark A., and Gary T. Schwartz. 2008. The ontogeny of masticatory system\n configuration in humans and its influence on the timing of molar eruption.\n American Journal of Physical Anthropology\n 135(suppl.):299.']
  • ['Stearns,\n Stephen. 1992. The evolution of life histories. Oxford: Oxford\n University Press.']
  • ['Trinkaus,\n Erik. 1995. Neanderthal mortality patterns. Journal of Archaeological\n Science 22:121–142.']
  • ['———. 2011. Late Pleistocene adult mortality patterns and\n modern human establishment. Proceedings of the National Academy of\n Sciences of the USA 108:1267–1271.']
  • ['Trinkaus,\n Erik, and Robert L. Tompkins. 1990. The Neanderthal life cycle: the possibility,\n probability, and perceptibility of contrasts with recent humans. In\n Primate life history and evolution. C. Jean De Rousseau,\n ed. Pp. 153–180. New York: Wiley-Liss.']
  • ['Ungar,\n Peter S. 2012. Dental evidence for the reconstruction of diet in African early\n Homo. Current Anthropology 53(suppl.\n 6):S318–S329.']
  • ['Ungar,\n Peter S., Frederick E. Grine, Mark F. Teaford, and Sireen El Zaatari. 2011.\n Dental microwear and diets of African early Homo.\n Journal of Human Evolution 50:78–95.']
  • ['Walker,\n Robert S., Michael Gurven, Kim Hill, Andrea Migliano, Napolean Chagnon, Roberta\n De Souza, Gradimir Djurovic, et al. 2006. Growth rates and life histories in\n twenty-two small-scale societies. American Journal of Human\n Biology 18:295–311.']
  • ['West-Eberhard, Mary Jane. 2003. Developmental plasticity and\n evolution. New York: Oxford University Press.']
  • ['Willoughby,\n David P. 1978. All about gorillas. South Brunswick, NJ:\n Barnes.']
  • ['Winkler,\n Linda A., Jeffrey H. Schwartz, and Daris R. Swindler. 1991. Aspects of dental\n development in the orangutan prior to the eruption of the permanent dentition.\n American Journal of Physical Anthropology\n 86:255–272.']
  • ['Wood,\n Bernard A., and Mark Collard. 1999. The human genus. Science\n 284:65–71.']
  • ['Wood,\n Bernard A., and Nicholas Lonergan. 2008. The hominin fossil record: taxa, grades\n and clades. Journal of Anatomy 212:354–376.']
  • ['Zihlman,\n Adrienne, Debra Bolter, and Christophe Boesch. 2004. Wild chimpanzee dentition\n and its implications for assessing life history in immature hominin fossils.\n Proceedings of the National Academy of Sciences of the USA\n 101:10541–10543.']