Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       Order [Columbiformes] Latham, 1790 - pigeons and allies
         Family Columbidae Illiger, 1811 - doves, pigeons
           Subfamily Treroninae
             Genus Ptilinopus Swainson, 1825
               Ptilinopus insolitus Schlegel, 1863 - knob-billed fruit-dove
                 1 Ptilinopus insolitus insolitus Schlegel, 1863
                 2 Ptilinopus insolitus inferior Hartert, 1924