Bibliography
Shaffer, H. B., J. M. Clark, and F. Kraus . 1991. When molecules and morphology clash: a phylogenetic analysis of the North American ambystomatid salamanders (Caudata: Ambystomatidae). Systematic Zoology 40: 284-303.
Shaffer, H. B., J. M. Clark, and F. Kraus . 1991. When molecules and morphology clash: a phylogenetic analysis of the North American ambystomatid salamanders (Caudata: Ambystomatidae). Systematic Zoology 40: 284-303.
