Crozier, R. H. 1968a. An acetic acid dissociation, air drying technique for insect chromosomes, with aceto-lactic orcein staining. Stain Technology 43:171-173.

Crozier, R. H. 1968b. Interpopulation karyotype differences in Australian Iridomyrmex of the "detectus" group (Hymenoptera: Formicidae: Dolichoderinae). Journal of the Australian Entomological Society 7:25-27. PDF

Crozier, R. H. 1968c. The chromosomes of three Australian dacetine ant species (Hymenoptera: Formicidae). Psyche (Cambridge) 75:87-90. PDF

Crozier, R. H. 1969a ("1968"). Cytotaxonomic studies on some Australian dolichoderine ants (Hymenoptera: Formicidae). Caryologia 21:241-259. PDF

Crozier, R. H. 1969b. Chromosome number polymorphism in an Australian ponerine ant. Canadian Journal of Genetics and Cytology 11:333-339. PDF

Crozier, R. H. 1970a. Karyotypes of twenty-one ant species (Hymenoptera: Formicidae), with reviews of the known ant karyotypes. Canadian Journal of Genetics and Cytology 12:109-128. PDF

Crozier, R. H. 1970b. Pericentric rearrangement polymorphism in a North American dolichoderine ant (Hymenoptera: Formicidae). Canadian Journal of Genetics and Cytology 12:541-546.

Crozier, R. H. 1970c. On the potential for genetic variability in haplo-diploidy. Genetica 41:551-556.

Crozier, R. H. 1973. Apparent differential selection at an isozyme locus between queens and workers of the ant Aphaenogaster rudis. Genetics 73:313-318.

Crozier, R. H. 1975. Animal cytogenetics. 3. Insecta. (7) Hymenoptera. Berlin: Gebrüder Borntraeger, 95 pp.

Crozier, R. H. 1976. Genetic boundaries in the ant Aphaenogaster rudis. Isozyme Bulletin 9:58.

Crozier, R. H.; Consul, P. C. 1976. Conditions for genetic polymorphism in social Hymenoptera under selection at the colony level. Theoretical Population Biology 10:1-9.

Glancey, B. M.; St. Romain, M. K.; Crozier, R. 1976. Chromosome numbers of the red and black imported fire ants, Solenopsis invicta and S. richteri. Annals of the Entomological Society of America 69:469-470.

Imai, H. T.; Crozier, R. H.; Taylor, R. W. 1977. Karyotype evolution in Australian ants. Chromosoma (Berlin) 59:341-393. PDF

Crozier, R. H. 1977a. Genetic differentiation between populations of the ant Aphaenogaster "rudis" in the southeastern United States. Genetica 47:17-36.

Crozier, R. H. 1977b. Evolutionary genetics of the Hymenoptera. Annual Review of Entomology 22:263-288.

Craig, R.; Crozier, R. H. 1978a. Caste-specific locus expression in ants. Isozyme Bulletin 11:64-65.

Craig, R.; Crozier, R. H. 1978b. No evidence for role of heterozygosity in ant caste determination. Isozyme Bulletin 11:66-67.

Craig, R.; Crozier, R. H. 1979. Relatedness in the polygynous ant Myrmecia pilosula. Evolution 33:335-341.

Crozier, R. H. 1979. Genetics of sociality. Pp. 223-286 in: Hermann, H. R. (ed.) 1979. Social insects. Volume 1. New York: Academic Press, xv + 437 pp.

Burgman, M. A.; Crozier, R. H.; Taylor, R. W. 1980. Comparisons of different methods of determining affinities of nine ant species of the genus Camponotus. Australian Journal of Zoology 28:151-160.

Crozier, R. H. 1981. Genetic aspects of ant evolution. Pp. 356-370 in: Atchley, W. R.; Woodruff, D. C. (eds.) 1981. Essays in evolution and speciation in honor of M. J. D. White. Cambridge: Cambridge University Press, ix + 436 pp.

Freeland, J.; Crozier, R. H.; Marc, J. 1982. On the occurrence of arolia in ant feet. Journal of the Australian Entomological Society 21:257-262. PDF

Crozier, R. H. 1983. Genetics and insect systematics: retrospect and prospect. Pp. 80-92 in: Highley, E.; Taylor, R. W. (eds.) 1983. Australian systematic entomology: a bicentenary perspective. Melbourne: CSIRO, vii + 147 pp.

Itow, T.; Kobayashi, K.; Kubota, M.; Ogata, K.; Imai, H. T.; Crozier, R. H. 1984. The reproductive cycle of the queenless ant Pristomyrmex pungens. Insectes Sociaux 31:87-102. PDF

Crosland, M. W. J.; Crozier, R. H. 1986. Myrmecia pilosula, an ant with only one pair of chromosomes. Science (Washington, D. C.) 231:1278. PDF

Crozier, R. H.; Pamilo, P. 1986. Relatedness within and between colonies of a queenless ant species of the genus Rhytidoponera (Hymenoptera: Formicidae). Entomologia Generalis 11:113-117.

Crozier, R. H.; Pamilo, P.; Taylor, R. W.; Crozier, Y. C. 1986. Evolutionary patterns in some putative Australian species in the ant genus Rhytidoponera. Australian Journal of Zoology 34:535-560.

Crosland, M. W. J.; Crozier, R. H.; Imai, H. T. 1988. Evidence for several sibling biological species centred on Myrmecia pilosula (F. Smith) (Hymenoptera: Formicidae). Journal of the Australian Entomological Society 27:13-14. PDF

Crosland, M. W. J.; Crozier, R. H.; Jefferson, E. 1988. Aspects of the biology of the primitive ant genus Myrmecia F. (Hymenoptera: Formicidae). Journal of the Australian Entomological Society 27:305-309. PDF