Evolution, Biogeography and Systematics

Current Research

Historical Biogeography

The Mississippi River plays an important role in species evolution and historical biogeography through vicariance. We are examining how vicariance has impacted a regional distribution of fauna along its path.

Morphological Evaluation

The Northern Cricket Frog and Blanchard's Cricket Frog are very similar species, previously believed to be subspecies. We are evaluating morphological markers and have recently sequenced the whole genome.

Draft Genomes

We are analyzing the data from two Draft Genomes we are producing. One is a crustacean, the other an amphibian.


McCallum, M.L. and S.E. Trauth. 2006. An Evaluation of the Subspecies Acris crepitans blanchardi (Anura, Hylidae). Zootaxa 1104(1):1-21.

McCallum, M.L. 1995. Geographical Distribution. Heterodon nasicus (western hognose snake). Herpetological Review 26:46.