Eukaryota  >  Metazoa  >  Chordata  >  Amphibia  >  Gymnophiona

Family	Genus	Species
Caeciliidae	2	11
Chikilidae	1	1
Dermophiidae	4	9
Herpelidae	2	22
Ichthyophiidae	3	131
Indotyphlidae	6	26
Rhinatrematidae	2	14
Scolecomorphidae	2	6
Siphonopidae	4	22
Typhlonectidae	4	7