tion: Preliminary experiments in Levallois flake production. Anthropol. 
Sci. 105(3): 159-168. 
Schick, K. D., and N. Toth 
1993. Making silent stones speak. New York: Simon and Schuster. 
Stringer, C. B., and C. Gamble 
1993. In search of the Neanderthals. London: Thames and Hudson. 
Swisher, C. C., G. H. Curtis, T. Jacob, A. G. Getty, A. Suprijo, and Widiasmoro 
1994. Age of the earliest known hominids in Java, Indonesia. Science 263: 1118— 
1121. 
Swisher, C. C., W. J. Rink, S. C. Anton, H. P. Schwarcz, G. H. Curtis, A. Suprijo, 
and Widiasmoro 
1996. Latest Homo erectus of Java: Potential contemporaneity with Homo sap- 
iens in southeast Asia. Science 274: 1870-1874. 
Tattersall, I. 
1986. Species recognition in human paleontology. J. Hum. Evol. 15: 165-175. 
1994. How does evolution work? Evol. Anthropol. 3: 2-3. 
1995a. The fossil trail: How we know what we think we know about human 
evolution. New York: Oxford Univ. Press. 
1995b. The last Neanderthal: The rise, success, and mysterious extinction of our 
closest human relatives. New York: Macmillan. 
1997. Out of Africa again ... and again? Sci. Am. 276 (4): 46-53. 
1998. Becoming human: Evolution and human uniqueness. New York: Harcourt 
Brace. 
Toth, N., K. D. Schick, E. S. Savage-Rumbaugh, R. Sevcik, and D. Rumbaugh 
1993. Investigations in the stone tool-making and tool-using capacities of a bon- 
obo. J. Archaeol. Sci. 20: 81-91. 
Trinkaus, E. 
1983. The Shanidar Neandertals. New York: Academic Press. 
Walker, A. C., and R. Leakey (eds.) 
1993. The Nariokotome Homo erectus skeleton. Cambridge, MA: Harvard Univ. 
Press. 
Wallace, A. R. 
1989. Darwinism: An exposition of the theory of natural selection and some of 
its applications. London: Macmillan. 
White, T. D., G. Suwa, and B. Asfaw 
1994. Australopithecus ramidus, a new species of early hominid from Aramis, 
Ethiopia. Nature 371: 306-312. 
Wolpoff, M. H., A. G. Thorne, J. Jelinek, and Z. Yinyun 
1993. The case for sinking Homo erectus: 100 years of Pithecanthropus is 
enough! Cour. Forschungsinst. Senckenb. 171: 341-361. 
Py 
