Fig. 1
From: What lies beneath? Molecular evolution during the radiation of caecilian amphibians
Phylogenetic tree used in the tests of positive selection. Branches used as foreground branches in the different tests are indicated with numbers as follows: 1: Gymnophiona branch, 2: Teresomata branch, 3: R. bivittatum branch, 4: Microcaecilia branch, 5: Caecilia + Typhlonectes branch, 6: M. dermatophaga branch, 7: M. unicolor branch, 8: T. compressicauda branch and 9: C. tentaculata branch. Hyphothesied ecological opportunities are marked with asterisks. Phylogeny based on [40] and [69]. Note that the sampling includes species from both sides of the basal divergence within Gymnophiona, so that branch 1 terminates in the last common ancestor of all extant caecilians. (Pictures credit: MW)