Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
   Amphibia Gray 1825 [Gauthier, Kluge & Rowe 1988] - amphibians see Class Amphibia Gray, 1825
     Gymnophiona Müller, 1832 see Order Gymnophiona Rafinesque, 1814
       Stegokrotaphia Cannatella & Hillis, 1993
         Family Caeciliidae Rafinesque, 1814
           Subfamily Scolecomorphinae Taylor, 1969
             1 Genus Crotaphatrema Nussbaum, 1985
             2 Genus Scolecomorphus Boulenger, 1883