Rich Mountain Salamander Plethodon ouachitae  Dunn & Heinze, 1933
Image © Suzanne L. Collins, 2001
Taxonomic Comments:
Shepard & Burbrink (2008 Molecular Ecology 17: 5315–5335) demonstrated that this single species of salamander may soon be seven. Shepard, Donald B., Kelly J. Irwin, and Frank T. Burbrink (2011. Morphological Differentiation in Ouachita Mountain Endemic Salamanders. Herpetologica 67(4): 355-368), using mtDNA, confirmed seven distinct evolutionary lineages within this species, but have not yet named them.