Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Gruiformes Bonaparte, 1854
           Family Rallidae Vigors, 1825 - rails, waterhens, coots
             Subfamily Rallinae Vigors, 1825 - rails see Family Rallidae Vigors, 1825
               Genus Porzana Vieillot, 1816
                 ‡Porzana palmeri (Frohawk, 1892) - Laysan crake