After Nelson, 1994, and Froese & Pauly, 2001

<==o Saccopharyngiformes (ahmattiankeriaskalat, pelikaanikalat)
   |--o Cyematidae [Cyemidae, Cyematoidei:] (nuoliankeriaat; Bobtail snipe eels)
   |  |-- Cyema atrum Günther, 1878 (nuoliankerias; Bobtail eel)
   |  `-- Neocyama erythrosoma Castle, 1978
   `--o Saccopharyngoidei [Lyomeri] (ahmattiankeriaansukuiset)
      |-- Eurypharynx pelecanoides Vaillant, 1882 [Eurypharyngidae] (pelikaaniankerias; Pelican eel)
      |--o Saccopharynx [Saccopharyngidae] (ahmattiankeriaat; Swallowers)
      |  |-- S. ampullaceus (Harwood, 1827) (Gulper eel)
      |  |-- S.  berteli Tighe & Nielsen, 2000
      |  |-- S. flagellum Cuvier, 1829 (Gulper)
      |  |-- S. harrisoni Beebe, 1932
      |  |-- S. hjorti Bertin, 1938
      |  |-- S. lavenbergi Nielsen & Bertelsen, 1985
      |  |-- S. paucovertebratis Nielsen & Bertelsen, 1985
      |  |-- S. ramosus Nielsen & Bertelsen, 1985
      |  |-- S. schmidti Bertin, 1934 (Whiptail gulper)
      |  |-- S. thalassa Nielsen & Bertelsen, 1985
      |  `-- S. trilobatus Nielsen & Bertelsen, 1985
      `--o Monognathus [Monognathidae] (kita-ankeriaat)
         |-- M. ahlstromi Raju, 1974 (Paddletail onejaw)
         |-- M. bertini Bertelsen & Nielsen, 1987
         |-- M. boehlkei Bertelsen & Nielsen, 1987
         |-- M. bruuni Bertin, 1936
         |-- M. herringi Bertelsen & Nielsen, 1987
         |-- M. isaacsi Raju, 1974
         |-- M. jesperseni Bertin, 1936
         |-- M. jesse Raju, 1974
         |-- M. nigeli Bertelsen & Nielsen, 1987
         |-- M. ozawai Bertelsen & Nielsen, 1987
         |-- M. rajui Bertelsen & Nielsen, 1987
         |-- M. rosenblatti Bertelsen & Nielsen, 1987
         |-- M. smithi Bertelsen & Nielsen, 1987
         `-- M. taningi Bertin, 1936

Reference(s):