Small-mouthed salamanders are found from northeastern Ohio west into Missouri and eastern Nebraska. The northern edge of the range is southeast Michigan and the southern range goes through western Kentucky and Tennessee to the Gulf of Mexico. They are even found on several islands in southern Lake Erie.
Biogeographic Regions: nearctic (Native )
- Harding, J. 1997. Amphibians and Reptiles of the Great Lakes Region. Ann Arbor, MI: University of Michigan Press.
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