After Bockstanz, 1997, and Frost et al., 2006, with Recent species from Frost, 2000- [“AMNH Amphibian species of the World”]

<==o Gymnophiona Rafinesque, 1814 [non Müller, 1832] [incl. Apoda Oppel, 1811] (matosammakot; caecilians)
   |-- †Eocaecilia micropodia Wilkinson & Nussbaum, 1999 [Eocaeciliaidae]
   `--+-- †Rubricacaecilia monbaroni Evans & Sigigneau-Russell, 2001
      `--o Apoda Oppel, 1811 (nykymatosammakot; modern caecilians)
         |--o Rhinatrematidae Nussbaum, 1977 (kuonomatosammakot, amerikanmatosammakot)
         |  |-- Rhinatrema bivittatum Duméril & Bibron, 1841
         |  `--o Epicrionops Boulenger, 1883
         |     |-- E. bicolor
         |     |-- E. columbianus
         |     |-- E. lativittatus
         |     |-- E. marmoratus
         |     |-- E. niger
         |     |-- E. parkeri
         |     |-- E. peruvianus
         |     `-- E. petersi
         `--o Stegokrotaphia Cannatella & Hillis, 1993
            |-- Ichthyophiidae Taylor, 1968 [Epicria Fitzinger, 1843] [incl. Uraeotyphlidae Nussbaum, 1979] (aasianmatosammakot)
            `--o Caeciliidae Rafinesque, 1814 [Cecilinia Rafinesque, 1814]
               |== Caeciliinae [paraphyletic]
               |--o Scolecomorphinae Taylor, 1968 sensu Frost et al., 2006 (afrikanmatosammakot)
               |  |--o Crotaphatrema Nussbaum, 1985
               |  |  |-- C. bornMülleri
               |  |  |-- C. lamottei
               |  |  `-- C. tchabalmbaboensis
               |  `--o Scolecomorphus Boulenger, 1883
               |     |-- S. kirkii (afrikanmatosammakko)
               |     |-- S. uluguruensis
               |     `-- S. vittatus
               `-- Typhlonectinae Taylor, 1968 sensu Frost et al., 2006 [Typhlonectidae Taylor, 1968] (vesimatosammakot)

Reference(s):