Orzack, S.H., J.J. Sohn, K.D. Kallman, S.A. Levin, and R. Johnston. 1980.  Maintenance of the three sex chromosome polymorphism in the platyfish, Xiphophorus maculatus. Evolution 14: 663-772.

Tuljapurkar, S.D., and S.H. Orzack. 1980.  Population dynamics in variable environments, I. Long-run growth rates and extinction. Theoretical Population Biology 18: 314-342.

Orzack, S.H. 1981.  The modern synthesis is partly Wright. Paleobiology 7: 128-131.

Thacher, S.M., and S.H. Orzack. 1983.  The consequences of nuclear war. Carolina Tips 46(12).

Orzack, S.H. 1985.  Population dynamics in variable environments, V. The genetics of homeostasis revisited. The American Naturalist 125: 550-772.

Parker, E.D., Jr., and S.H. Orzack. 1985.  Genetic variation for the sex ratio in a parasitic wasp, Nasonia vitripennis. Genetics 110: 93-105.

Hedrick, P.W., P.F. Brussard, F.W. Allendorf, J. Beardmore, and S.H. Orzack. 1986.  Protein variation, fitness, and captive propagation. Zoo Biology; 5: 91-99.

Orzack, S.H., and E.D. Parker, Jr. 1986.  Sex ratio control in a parasitic wasp, Nasonia vitripennis, I. Genetic variation in facultative sex ratio adjustment. Evolution 40: 331-340.

Orzack, S.H. 1986.  Sex ratio control in a parasitic wasp, Nasonia vitripennis. II. Experimental analysis of an optimal sex ratio model. Evolution 40: 341-356.

Lande, R., and S.H. Orzack. 1988.  Extinction dynamics of  age-structured populations in a fluctuating environment. PNAS 85: 7418-7421.

Orzack, S.H., and S. Tuljapurkar. 1989.  Population dynamics in variable environments VII. The demography and evolution of iteroparity. The American Naturalist 133: 901-923

Orzack, S.H., and E.D. Parker, Jr. 1990.  Genetic variation for sex ratio traits within a natural population of a parasitic wasp, Nasonia vitripennis. Genetics 124: 373-384.

Orzack, S.H. 1990.  The comparative biology of second sex ratio evolution within a natural population of a parasitic wasp, Nasonia vitripennis. Genetics 124: 385-396.

Orzack, S.H., E.D. Parker, Jr., and J. Gladstone. 1991.  The comparative biology of genetic variation for conditional sex ratio adjustment in a parasitic wasp, Nasonia vitripennis. Genetics 127: 583-599.

Orzack, S.H. 1992.  Sex ratio evolution in parasitic wasps. Pages 477-511 in: Evolution and Diversity of Sex Ratio in Insects and Mites, edited by Dana Wrensch and Mercedes Ebbert, Chapman and Hall.

Orzack, S.H. 1993.  Life history evolution and population dynamics in variable environments: some insights from stochastic demography. Pages 63-104 in: Adaptation in a stochastic environment, edited by Jin Yoshimura and Colin Clark, Springer-Verlag.

Orzack, S.H., and E. Sober. 1993.  A critical look at Richard Levins' "The strategy of model building in population biology". The Quarterly Review of Biology 68: 533-546.

Orzack, S.H., and E. Sober. 1994a.  Optimality models and the test of adaptationism. The American Naturalist 143: 361-380.

Orzack, S.H., and E. Sober. 1994b.  How (not) to test an optimality model. Trends in Ecology and Evolution 9: 265-267.

Orzack, S.H., and J. Gladstone. 1994.  Quantitative genetics of sex ratio traits in the parasitic wasp, Nasonia vitripennis. Genetics 137: 211-220.

Orzack, S.H., and R. Chappell. 1995.  Sample-size determination for parent-offspring regression of a composite trait. Biometrics 51: 822-830.

Orzack, S.H., and E. Sober. 1996.  How to formulate and test adaptationism. The American Naturalist 148: 202-210.

Orzack, S.H. 1997.  Life history evolution and extinction. Pages 273-302 in: Structured Population Models in Marine, Terrestrial, and Freshwater Systems, edited by S. Tuljapurkar and H. Caswell, Chapman and Hall.

Orzack, S.H., and S. Tuljapurkar. 2001.  Reproductive effort in variable environments or environmental variation is for the birds. Ecology 82: 2659-2665.

Orzack, S.H., and E. Sober. 2001.  Adaptation, Phylogenetic Inertia, and the Method of Controlled Comparisons. Pages 45 - 63 in:

Adaptationism and Optimality, edited by S. H. Orzack and E. Sober, Cambridge University Press.

Orzack, S.H., and E. Sober. 2001.  Adaptationism and Optimality, Cambridge University Press.

Orzack, S.H. 2001. Sex ratio and Sex allocation. Pages 165 - 176 in: Evolutionary Ecology, edited by C. Fox, D. Roff, and D. Fairbairn, Oxford University Press.

Orzack, S.H. 2001. Optimization in evolution. Pages 5000-5003 in: International Encyclopedia of the Social and Behavioral Sciences, edited by N. J. Smelser and P. B. Baltes, Elsevier Press.

Orzack, S.H. 2002. Sex ratios: the past and the future. Pages 383-398 in: Sex Ratios, edited by I. C. W. Hardy, Cambridge University Press.

Orzack, S.H. 2003. How and why do aging and lifespan evolve? Population and Development Review 29 (Supp.): 19-38.

Sober, E., and S.H. Orzack. 2003. Common ancestry and natural selection. British Journal of Philosophy of Science 54: 423-437.

Orzack, S.H, D. Gusfield, J. Olson, S. Nesbitt, L. Subramanyan, and V. P. Stanton, Jr. 2003. Analysis and exploration of the use of rule-based algorithms and consensus methods for the inferral of haplotypes. Genetics 165: 915-928.

Orzack, S.H. 2004. Commentary on "Dynamical models as paths to evidence in ecology" by M. L. Taper and S. Lele. Pages 286-290 in: The Nature of Scientific Evidence: Empirical, Statistical, and Philosophical Considerations, edited by M. L. Taper and S. Lele, University of Chicago Press.

Orzack, S.H., and W. G. S. Hines. 2005. The evolution of strategy variation: will an ESS evolve? Evolution 59: 1183-1193.

Gusfield, D. and S. H. Orzack. 2005. Haplotype inference. Pages 18-1 to 18-28 in Handbook of Computational Molecular Biology}, Edited by S. Aluru, Chapman & Hall/CRC Computer and Information Science Series.

Orzack, S.H. 2005. What, if anything, is "the strategy of model building in population biology"?: a comment on Levins' (1966) and Odenbaugh (2003). Philosophy of Science 72: 479-485.

Hansen, T. F., and S. H. Orzack. 2005. Assessing current adaptation and phylogenetic inertia as explanations of trait evolution: the need for controlled comparisons. Evolution 59: 2063-2072.

Orzack, S.H., D. Gusfield, L. Subrahmanyan, L. Essioux, and S. Lissargue. 2008. Analytical and analytical methods for haplotype frequency inference: What do they tell us? Pages 373-394 in: Bioinformatics Algorithms - Techniques and Applications, edited by I. I. Mandoiu and A. Zelikovsky, Wiley.

Orzack, S.H. 2008. Testing adaptive hypotheses, optimality models, and adaptationism. Pages 87-112 in Oxford Handbook of Philosophy of Biology, Edited by M. Ruse. Oxford University Press.

Hansen, T.F., J. Pienaar, and S.H. Orzack. 2008. A comparative method for studying adaptation to a randomly evolving environment. Evolution, in press.

Orzack, S.H., S. Tuljapurkar, U.K. Steiner, and P. Thompson. 2008. The evolutionary biodemography of the Northern Fulmar (Fulmarus glacialis). Submitted.

Orzack, S.H., U.K. Steiner, and S.H. Tuljapurkar. 2008 Statics and dynamics of reproduction and survival in the mute swan, Cygnus olor. Submitted.

Orzack, S.H., S. Tuljapurkar, U.K. Steiner, and K.D. Carey 2008. Is there one trajectory of aging in the olive baboon (Papio cynocephalus)? In preparation.

Tuljapurkar, S., U.K. Steiner, and S. H. Orzack 2008 Dynamic heterogeneity in life histories. In preparation.

Orzack, S.H. 2008. A molecular-genetic analysis of population structure in two parasitic wasps, Nasonia giraulti and N. vitripennis, in preparation.

D. Steinsaltz and S. H. Orzack. 2008. What do we really know about dinosaur aging? In preparation