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

<==o Halosauridae (liskoankeriaat; halosaurs) [N: 3/15] [FB: 3/13]
   |--o Aldrovandia [N: 6 species] [FB: 5 species]
   |  |-- A. affinis (Günther, 1877) (Gilbert's halosaurid fish)
   |  |-- A. gracilis Goode & Bean, 1896
   |  |-- A. oleosa Sulak, 1977
   |  |-- A. phalacra (Vaillant, 1888) (Hawaiian halosaurid fish)
   |  `-- A. rostrata (Günther, 1878)
   |--o †Echidnocephalus U. Cret. Eu. ?NA.
   |  `-- †E. troscheli
   |-- †Enchelurus U. Cret. Eu. SWAs. 
   |-- †Laytonia ?Cret. Olig. Plioc. NA.
   |-- Halosauropsis macrochir (Günther, 1878) (Abyssal halosaur)
   `--o Halosaurus Mioc. NA. R. Oc. ()? [N: 8 species] [FB: 7]
      |-- H. attenuatus Garman, 1899
      |-- H.  guentheri Goode & Bean, 1896
      |-- H.  johnsonianus Vaillant, 1888 (Halosaur)
      |-- H.  ovenii Johnson, 1864
      |-- H.  parvipennis Alcock, 1892
      |-- H.  pectoralis McCulloch, 1926 (Goanna fish)
      `-- H.  radiatus Garman, 1899

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