<==o Eurypygiformes Fürbringer, 1888 sensu Hackett et al., 2008 [Eurypygoidea Selby, 1840; Eurypygae Fürbringer, 1888] [incl.  Rhyniocheti Sharpe, 1891]  (sunbittern & kagu; aurinkokurjet ja kagut)
   |--o Rhyniocheti Sharpe, 1891 [Rhynochetoidea Sharpe, 1891]
   |  |?-o †Aptornis Owen, 1844, non? 1848 [Aptornis Mantell, 1848; Apterornis Owen] [Aptornithidae Mantell, 1848; Apterornithidae Bonaparte, 1856] (adzebills)
   |  |  |-- †A. otidiformis (Owen, 1844) [Dinornis otidiformis Owen, 1844; Apterornis otidiformis] (North Island Adzebill) R. Zeal.
   |  |  |-- †A. defossor Owen, 1871 (South Island Adzebill) R. NZ.
   |  |  `?- ?†A. proasciarostratus Worthy, Tennyson & Scofield, 2011; Mioc. Zeal.
   |  `--o Rhynochetos Verreaux & Des Murs, 1860 [Rhynochetidae Newton, 1868] (kagut; kagus)
   |     |-- †R. orarius Balouet & Olson, 1989 (Lowland kagu; isokagu) R. Zeal.
   |     `-- R. jubatus Verreaux & Des Murs, 1860 (kagu)
   `--o Eurypygae Fürbringer, 1888
      |--o Eurypyga helias (Pallas, 1781) Illiger, 1811 [Eurypygidae Selby, 1840] (sunbittern; aurinkokurki)
      |  |-- E. h. helias (Pallas, 1781)
      |  |-- E. h. major Hartlaub, 1844
      |  `-- E. h. meridionalis Berlepsch & Stolzmann, 1902
      `--o †Messelornithidae Hesse, 1988
         |-- †Itardiornis hessae Mourer-Chauviré, 1995
         `--o †Messelornis Hesse, 1988
            |-- †M. cristata Hesse, 1988
            |-- †M. nearctica Hesse, 1992
            `-- †M. russelli Mourer-Chaviré, 1995

Reference(s):

  • Worthy, T. H., Tennyson, A. J. D. & Scofield, R. P., 2011: Fossils reveal an early Miocene presence of the aberrant gruiform Aves: Aptornithidae in New Zealand.
    –Journal of Ornithology: Vol. 152, #3, pp. (669-680) [doi: 10.1007/s10336-011-0649-6]
  •