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Department ofVertebrate Zoology

Division of Fishes

Carl Hansen
© Smithsonian Institution
bar Casey Dillman
    Casey Dillman
    Postdoctoral Fellow

  • E-mail: dillmanc[at]

  • Mailing Address:
    Smithsonian Institution
    PO Box 37012, MRC 159
    Washington, DC 20013-7012

  • Shipping Address:
    Smithsonian Institution
    National Museum of Natural History
    10th and Constitution Ave, NW
    Washington, DC 20560-0159


Ph.D. Saint Louis University, 2008
M.A. University of Missouri-Columbia, 2004
B.S. Missouri Western State University, 1998

Research Interests

I am interested in several areas of research including ichthyology, phylogenetics, natural history and evolutionary biology. In my work I attempt to integrate these different interests into a unified whole. I use a multi-faceted approach to accomplish my research goals, which includes data from genomics, traditional multi-locus DNA sequence datasets, development, and morphological character complexes. These are used to understand species interrelationships and reconstruct hypotheses of relationships. This phylogenetic foundation is then built upon to understand evolutionary phenomena such as temporal diversification using fossil calibrations, elucidating the role that morphology and ecology play in diversification, pattern and process during lineage diversification, and biogeographic history. In addition to the application of phylogenetics to evolutionary biology, I am also interested in philosophical questions related to the practice of phylogenetic systematics.

Dillman, Casey B., Sidlauskas, Brian L. and Vari, Richard P. 2016. A morphological supermatrix-based phylogeny for the Neotropical fish superfamily Anostomoidea (Ostariophysi: Characiformes): phylogeny, missing data and homoplasy. Cladistics, 32(3): 276-296. doi:10.1111/cla.12127

Hilton, Eric J., Dillman, Casey B., Zhang, Tao, Zhang, Longzhen and Zhuang, Ping 2016. The skull of the Chinese sturgeon, Acipenser sinensis (Acipenseridae). Acta Zoologica, 97(4): 419-432. doi:10.1111/azo.12136

Dillman, Casey B. and Hilton, Eric J. 2015. Anatomy and early development of the pectoral girdle, fin, and fin spine of sturgeons (Actinopterygii: Acipenseridae). Journal of Morphology, 276(3): 241-260. doi:10.1002/jmor.20328

Hilton, E. J., Konstantinidis, P., Schnell, N. K. and Dillman, Casey B. 2014. Identity of a Unique Cartilage in the Buccal Cavity of Gars (Neopterygii: Lepisosteiformes: Lepisosteidae). Copeia, 2014(1): 50-55.

Lusk, S. C., Watkins, B. E., Rhea, A., Dillman, Casey B. and Hilton, E. J. 2014. Occurrence of Juvenile Southern flounder (Paralichthys lethostigma) in Tributaries of the Chesapeake Bay. Southeastern Naturalist, 13(3): 515-522.

Escalante, M. A., García-de-León, F. J., Dillman, Casey B., de los, Santos Camarillo, George, A., de, los A., Ruiz-Luna, A., Mayden, R. L. and Manel, S. 2014. Genetic introgression of cultured Rainbow Trout in the Mexican native trout complex. Conservation Genetics, 15: 1063-1071.

Dillman, Casey B., Zhuang, P., Zhang, T., Zhang, L. Z., Mugue, N. and Hilton, E. J. 2014. Forensic investigations into a GenBank anomaly: endangered taxa and the importance of voucher specimens in molecular studies. Journal of Applied Ichthyology, 30(6): 1300-1309. doi:10.1111/jai.12568

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