After Kurochkin, 1996

<==o †Enantiornithes Walker, 1981
   |?- †Enantiornithes genera et species indet. [L. Cret. SWAs.] [Dalla Vecchia & Chiappe, 2002]
   |?- †Cerebavis cenomanica Kurochkin, Saveliev, Postnov, Pervushov, & Popov, 2006; U.Cret. EEu.
   |?- †Cuspirostrisornis jinfengi Hou, 1996
   |?- †Eoenantiornis buhleri Hou, Zhou & Feduccia, 1999
   |?- †Kuszholia mengi Nesov, 1992 [Kuszholiidae Nesov, 1992]
   |?- †Largirostrisornis sexdentornis Hou, 1996
   |?- †Liaoxiornis delicatus Hou & Chen, 1999
   |?- †Longchenornis sanyanensis Hou, 1996
   |-- †Vorona berivotrensis Forster, Chiappe, Krause, & Sampson, 1996
   `--o †Euenantiornithes
      |?- †Halimornis thompsoni Chiappe, Lamb Jr., & Ericson,, 2002
      |?- †Protopteryx Zhang & Zhou, 2000
      |-- †Eoalulavis hoyasi Sanz, Chiappe, Pérez-Moreno, Buscalioni, Moratalia, Ortega, & Poyato-Ariza, 1996
      |--o Euornithiformes Kurochkin, 1996 [incl. Sinornithiformes Sereno & Rao, 1992, Iberomesornithiformes Sanz & Bonaparte, 1992, Cathyornithiformes Zhou, Jin & Zhang, 1992]
      |  |-- †Noguerornis gonzalezi Lasaca-Ruiz, 1989
      |  |-- †Iberomesornis romelai Sanz & Bonaparte, 1992
      |  |-- †Concornis lacustris Sanz & Buscalioni, 1992
      |  |-- †Sinornis santensis Sereno & Rao, 1992
      |  |?- †Eocathyornis walkeri Zhou, 2002
      |  |-- †Cathayornis yandica Zhou, Jin & Zhang, 1992 [jr. synon. of Sinornis santensis Sereno & Rao, 1992??]
      |  `-- †Bolouchia zhengi Zhou, 1995
      `--o Axelornithiformes Brodkorb, 1976 [Gobipterygiformes Elzanowski, 1974, Enantiornithiformes Chiappe, 1992]
         |?- †Lectavis bretincola Chiappe, 1993
         |?- †Yungavolucris brevipedalis Chiappe, 1993
         |--o †Axelornithidae
         |  |--o †Zhyraornis Nesov, 1984 [Zhyraornithidae Nesov, 1984]
         |  |  |-- †Z. kashkarovi Nesov, 1984
         |  |  `-- ?†Z. logunovi Nesov, 1992
         |  |--o †“Gobipteryginae” Elzanowski, 1974 [new rank]
         |  |  |?- †Horezmavis eocretacea Nesov, 1983 [a gruiform?? (Kurochkin, 2000)]
         |  |  |-- †Nequerornis volans Chiappe vide Chiappe & Calvo, 1994
         |  |  |-- †Lenesornis maltshevskyi (Nesov, 1986)
         |  |  |-- †Gobipteryx minuta Elzanowski, 1974
         |  |  `--o †Nanantius Molnar, 1986
         |  |     |-- †N. eos Molnar, 1986
         |  |     `-- †N. valifanovi Kurochkin, 1996
         |  `--o †“Axelornithinae” Brodkorb, 1976 [new rank]
         |     |-- †Axelornis antecedens Brodkorb, 1976
         |     |-- †Kizylkumavis cretacea Nesov, 1984
         |     `-- †Sazavis prisca Nesov, 1989
         `--o Enantiornithidae Walker, 1981 
            |--o †Enantiornis Walker, 1981
            |  |-- †E. leali Walker, 1981
            |  |?- †E. walkeri Nesov & Panteleyev, 1993
            |  `?- †E. martini Nesov & Panteleyev, 1993
            |-- †Gurilynia nessovi Kurochkin, 1999
            `--o †“Avisaurinae” Brett-Surman & Paul, 1985 [new rank]
               |-- †Soroavisaurus australis Chiappe, 1993
               `--o †Avisaurus Brett-Surman & Paul, 1985
                  |-- †A. sp. [under description by L. Martin]
                  |-- †A. archibaldi Brett-Surman & Paul, 1985
                  `-- †A. gloriae Varricchio & Chiappe, 1995

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