Fig. 7 in The Amphibian Tree Of Life

Fig. 7. Relationships of salamanders suggested by Wiens et al. (2005). Families are noted on right. Results reflect a parsimony analysis of 326 character transformations of morphology (221 parsimonyinformative), and DNA sequences from nu rRNA (212 bp from Larson, 1991; 147 parsimony­informative) and RAG­1 (1,530 bp; 624 parsimony­informative). Sequence alignment was made using Sequencher (Gene Codes Corp.). Morphological characters identified as paedomorphic were treated as unknown for adult morphology and in some cases hypothetical terminals were related­species chimaeras of composite molecular and morphological data. Molecular transformations were weighted equally in analysis. Inferred insertion­deletion events were coded as binary characters separate from the nucleotide sequence characters and indel­required gaps within sequences were coded as missing. The tree was rooted on Gymnophiona 1 Anura.