Skip to main content
. 2012 May 2;109(3):146–155. doi: 10.1038/hdy.2012.22

Figure 1.

Figure 1

A simplified and abbreviated phylogeny of the major groups of anurans based on the relationships shown in Roelants et al. (2007) and Hedges et al. (2008). The approximate number of species in each group is given after the group name and is based on current numbers from AmphibiaWeb (accessed 20 February 2012). White circles contain the numbers of species from a particular group whose MHC class I alleles have been well-characterized while black circles contain the number of species characterized in the present study.