After Li, Grande & Wilson, 1997

<==o Osteoglossoidei Regan, 1909 [Osteoglossidae Bonaparte, 1832 sensu Li, Grande & Wilson, 1997] (arapaimamaiset)
   |?- †Eurychir lindleyi L.Cret. NAm. Paleoc.-Eoc. NAf.
   |?-o †Genartina Schubert, 1916 Eoc.NAm.
   |  |-- †G. hampshirensis Schubert, 1916
   |  `-- †G. texana Frizzell & Dante, 1965
   |--o Heterotididae Nelson, 1968 [Arapaimidae; Heterotidinae Nelson, 1968 sensu Li, Grande & Wilson, 1997] [incl. Dercetidae??] (arapaimat)
   |  |--+?- †Chandlerichthys strickeri Grande, 1986; L.Cret. NNA.
   |  |  `-- †Laeliichthys ancestralis Silva Santos, 1985; E.Cret. SAm.
   |  `--+--o †Joffrichthys Li & Wilson, 1996; Paleoc. NA.
   |     |  |-- †J. symmetropterus Li & Wilson, 1996
   |     |  `-- †J. triangulpterus Newbrey & Bozek, 2000
   |     `--+-- †Sinoglossus lushanensis Su, 1986; Eoc. EAs.
   |        `--+--+?- †Laeliichthys [alternative phylogenetic position]
   |           |  `--+?- †Paradercetis kipalaensis Casier, 1965
   |           |     `-- Heterotis niloticus (Cuvier, 1829) Rüppell, 1828 [Clupisudis] (afrikanarapaima; Heterotis)
   |           `--o Arapaima Müller, 1843 [Sudis G. Cuvier, 1816 (preoccupied); Vastres Valenciennes, 1847] (arapaimas'; arapaimat)
   |              |-- †A. sp.; Mioc. NWSAm.
   |              `--+-- A. mapae (Valenciennes, in Cuvier & Valenciennes, 1847) (Amapá arapaima; amapanarapaima) [only known from type]
   |                 |-- A. agassizii (Valenciennes, in Cuvier & Valenciennes, 1847) (Agassiz' arapaima; agassizinarapaima) [only known from type which has been destroyed, based on literature]
   |                 |-- A. arapaima (Valenciennes, in Cuvier & Valenciennes, 1847) (arapaima; pirarucú)
   |                 |-- A. leptosoma Stewart, 2013b (slender arapaima; hoikka-arapaima)
   |                 |-- A. sp. [Stewart, 2013b]
   |                 `-- A. gigas Schinz, in Cuvier, 1822 [Sudis gigas Schinz, in Cuvier, 1822; Vastres cuvieri Valenciennes, 1847] (giant arapaima; isoarapaima) [only known from type]
   `--o Osteoglossidae Bonaparte, 1832 [non 1850?] [Osteoglossinae Bonaparte, 1832 sensu Li, Grande & Wilson, 1997]
      |--+-- Pantodon buchholzi Peters, 1877 [Pantodontidae] (perhoskala; Freshwater butterflyfish)
      |  |-- †Chauliopareion mahengeense Murray & Wilson, 2005
      |  `--+-- †Singida jacksonoides Greenwood & Patterson, 1967; Eoc. EAf. [Singididae Greenwood & Patterson, 1967]
      |     `--o Osteoglossidae Bonaparte, 1832 sensu stricto [Osteoglossinae Bonaparte, 1832] (arawanat)
      |        |--o Scleropages Günther, 1864 Olig. R. EInd. Mioc. R. Aus. (kaukoidän arawanat)
      |        |  |-- S. formosus (Schlegel & Müller, 1839-1844) (aasianarawana; Asian bonytongue)
      |        |  |-- S. jardinii (Saville-Kent, 1892) (australianarawana; Australian bonytongue)
      |        |  `-- S. leichardti Günther, 1864 (täpläarawana; Spotted bonytongue)
      |        `--o Osteoglossum Cuvier, 1829 (aitoarawanat)
      |           |-- O. bicirrhosum (Cuvier, 1829) (hopea-arawana; arawana)
      |           `-- O. ferreirai Kanazawa, 1966 (musta-arawana, eteläamerikanarawana; Black arawana)
      `--o †“Phaerodutidae”
         |?- †Phareodusichthys tavernei Gayet, 1991
         |-- †Cretophareodus alberticus  Lim, 1996
         `--o †Phaerodus Leidy, 1873; M. Eoc. NA. Olig. Aus. [taxonomic history]
            |-- †P. testis (Cope, 1877) Grande, 1984 [taxonomic history]
            `--+-- †P. muelleri; Paleoc. NAf. Eoc. Eu. [taxonomic history]
               `--+-- †P. queenlandicus (Hills) [taxonomic history]
                  `-- †P. encaustus (Cope, 1871) [taxonomic history]

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