vgl. die umfassende, aktuelle Darstellung in R. Alexander Pyron & John J. Wiens (2011): A large-scale phylogeny of Amphibia including over 2800 species, and a revised classification of extant frogs, salamanders, and caecilians. Molecular Phylogenetics and Evolution 61: 543–583. doi:10.1016/j.ympev.2011.06.012
