Typhlonectidae
13 species.
- Argentine CaecilianChthonerpeton indistinctum
- Ari's CaecilianChthonerpeton arii
- Bahia CaecilianChthonerpeton exile
- Braestrup's CaecilianChthonerpeton braestrupi
- Cayenne CaecilianTyphlonectes compressicauda
- Eiselt's caecilianAtretochoana eiselti
- Kaup's CaecilianPotomotyphlus kaupii
- Minas Gerais CaecilianChthonerpeton perissodus
- Onore's CaecilianChthonerpeton onorei
- Rubber EelTyphlonectes natans
- Santa Catarina CaecilianChthonerpeton viviparum
- Sitio CaecilianChthonerpeton noctinectes
- Upper Amazon CaecilianNectocaecilia petersii