| molecular systematics and phylogeography of the plethodon elongatus species group: combining phylogenetic and population genetic methods to investigate species history. | plethodon elongatus and p. stormi (caudata: plethodontidae) are pacific northwest endemic species which occur in northwestern california and southwestern oregon. studies on these salamanders have resulted in differing taxonomic conclusions, but the underlying historical hypotheses, at both inter- and intraspecific levels, have never been examined in a molecular framework. here, representatives of 81 populations from throughout the range of both taxa are sequenced. portions of three mitochondrial ... | 2004 | 14653796 |