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

<==o Congridae [incl. Macrocephenchelyidae] (congers; meriankeriaat) [paraphyletic?] [FB: 30/123]
   |-- †Astroconger Olig. Aus.
   |?-o Bassanago [2]
   |  |-- B. bulbiceps Whitley, 1948 (Swollen-headed conger eel)
   |  `-- B. hirsutus (Castle, 1960)
   |?-o Bathycongrus [7]
   |  |-- B. baranesi Ben-Tuvia, 1993
   |  |-- B. bullisi (Smith & Kanazawa, 1977)
   |  |-- B. guttulatus (Günther, 1887)
   |  |-- B. macrurus (Gilbert, 1891) (Shorthead conger)
   |  |-- B. randalli Ben-Tuvia, 1993
   |  |-- B. varidens (Garman, 1899) (Largehead conger)
   |  `-- B. wallacei (Castle, 1968) (Longnose conger)
   |?- Bathyuroconger vicinus (Vaillant, 1888) Large-toothed conger
   |?- Blachea xenobranchialis Karrer & Smith, 1980
   |-- †Bolcyrus bajai M. Eoc. Eu. 
   |?-o Congriscus [2]
   |  |-- C. maldivensis (Norman, 1939)
   |  `-- C. megastomus (Günther, 1877)
   |?- Congrosoma evermanni Garman, 1899 (Evermann's conger)
   |?- Diploconger polystigmatus Kotthaus, 1968
   |-- †Enchelion montium U. Cret. SWAs. 
   |?- Japonoconger africanus (Poll, 1953)
   |-- †Paracongroides M. Eoc. Eu.
   |-- †Parbatmya Eoc. NA. 
   |?- Paruroconger drachi Blache & Bauchot, 1976
   |-- †Pavelichthys daniltschenkoi L. Olig. Eu.
   |?- Poeciloconger fasciatus Günther, 1872 (Barred sand conger)
   |?- Pseudophichthys splendens (Lea, 1913) (Purplemouthed conger)
   |?-o Pseudoxenomystax [2]
   |  |-- P. albescens (Barnard, 1923) (Hairy conger)
   |  `-- P. nielseni Karmovskaya, 1990
   |?- Scalanago lateralis Whitley, 1935
   |-- †Voltaconger latispinus M. Eoc. Eu. 
   |-- Heterocongrinae (hieta-ankeriaat)? [Nelson: 2 genera/25 species] [Fishbase: 2/31]
   |-- Bathymyrinae [5/23]
   `-- Congrinae [incl. Macrocephenchelyidae] [25 genera]

Reference(s):