After Nelson, 1994, with Recent species from Froese & Pauly, 2001 [“The Fishbase”]

<==o Congroidei (meriankeriaansukuiset)
   |-- Synaphobranchidae [incl. Dysommatidae] (petoankeriaat)
   |-- Ophichthidae [incl. Neenchelyidae, Aoteidae]
   |--o Coloconger [Colocongridae] [Nelson: 5 Recent species] [Fishbase: 6 Recent species]
   |  |-- C. cadenati Kanazawa, 1961
   |  |-- C. giganteus (Castle, 1959) (Giant leptocephalus)
   |  |-- C. japonicus Machida, 1984
   |  |-- C. meadi Kanazawa, 1957
   |  |-- C. raniceps Alcock, 1889 Froghead eel
   |  `-- C. scholesi Chan, 1967 (Indo-Pacific shorttail conger)
   |--o Derichthyidae [incl. Nessorhamphidae] (pitkäkaula-ankeriaat)
   |  |-- Derichthys serpentinus Gill, 1884 (Narrownecked oceanic eel)
   |  `--o Nessorhamphus ()? [2]
   |     |-- N. danae Schmidt, 1931
   |     `-- N. ingolfianus (Schmidt, 1912) (Duckbill oceanic eel)
   |-- Muraenesocidae (haukiankeriaat) [N: 4/8] [FB: 5/9]
   |-- Nemichthyidae (nokka-ankeriaat) [3/9]
   |-- Congridae [incl. Macrocephenchelyidae] (meriankeriaat) [FB: 30/123] [paraphyletic?]
   |-- Nettastomatidae (velhoankeriaat) [about 30 recent species (Nelson, 1994)] [FB: 6/24]
   `--o Serrivomeridae (kuonoankeriaat)
      |-- †Proserrivomer mecquenemi L. Olig. SWAs.
      |-- Stemonidium hypomelas Gilbert, 1905 (Black serrivomerid eel)
      `--o Serrivomer [Platuronides, Spinivomer] [9 species]
         |-- S. beanii Gill & Ryder, 1883 (Bean's sawtoothed eel)
         |-- S. bertini Bauchot, 1959 (Thread eel)
         |-- S. brevidentatus Roule & Bertin, 1929 (Black sawtoothed eel)
         |-- S. danae (Roule & Bertin, 1924)
         |-- S. jesperseni Bauchot-Boutin, 1953 (Crossthroat sawpalate)
         |-- S. lanceolatoides (Schmidt, 1916) (Short-tooth sawpalate)
         |-- S. samoensis Bauchot, 1959
         |-- S. schmidti Bauchot-Boutin, 1953
         `-- S. sector Garman, 1899 (Sawtooth eel)

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