B.A. Biology, Knox College, June 1982. M.A. Biology (Systematics and Ecology), The University of Kansas (Honors), May 1986. Ph.D. Biology (Systematics and Ecology), The University of Kansas (Honors), May 1991.

Ivonne J. Garzón-Ordu?a, Onildo Marini-Filho, Steven G. Johnson and Carla M. PenzaPhylogenetic relationships of Hamadryas (Nymphalidae: Biblidinae) based on the combined analysis of morphological and molecular data. Accepted Cladistics. Chaves-Campos, J., L.C. Coghill, M. Al-Salamah, T.J. Dewitt, and S.G. Johnson. Heritabilities and lack of genetic correlation for shell primary traits and function. In Press Evolutionary Ecology Research. Chaves-Campos, J., L.C. Coghill, F. J. García de León, and S.G. Johnson. 2012. The effect of aquatic plant abundance on shell crushing resistance in a freshwater snail. Plos One 7:9:e44374. Chaves-Campos, J., S.G. Johnson, and C.D. Hulsey. 2011. Spatial geographic mosaic in an aquatic predator-prey network. Plos One 6:7:e22472. Chaves-Campos, J., S.G. Johnson, F. J. García de León, and C.D. Hulsey. 2011. Phylogeography, genetic structure, and gene flow in the endemic freshwater shrimp Palaemonetes suttkusi from Cuatro Ciénegas, Mexico. Conservation Genetics 12: 557-567. Coghill, L.M, J. Chaves-Campos, F.E. Espinoza, S.L. Lance, T.C. Glenn, and S. G. Johnson. 2011. Microsatellite markers isolated from the Mexican banded spring snail Mexipyrgus churinceanus. Conservation Genetic Resources 3:29–31. Vogel, L. S. and S. G. Johnson. 2008. Estimation of hybridization and introgression frequency in toads (Genus: Bufo) using DNA sequence variation at mitochondrial and nuclear loci. Journal of Herpetology 42:61-75. Johnson, S. G. and R. S. Howard. 2007. Contrasting Patterns of Synonymous and Nonsynonymous Sequence Evolution in Asexual and Sexual Freshwater Snail Lineages. Evolution, 61:2728-2735.