A nine-family classification of caecilians (Amphibia: Gymnophiona) Author Wilkinson, Mark Author Mauro, Diego San Author Sherratt, Emma Author Gower, David J. text Zootaxa 2011 2874 41 64 journal article 47310 10.5281/zenodo.200863 69d6567b-7cbb-41b2-8f41-4620ab172850 1175-5326 200863 ORDER Gymnophiona, 1832 Lissamphibians with elongate annulate bodies, lacking limbs and girdles. Based on current understanding of phylogeny, the extant Gymnophiona comprise all descendents of the last common ancestor of, for example, Rhinatrema bivittatum and Caecilia tentaculata .