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] Passeriformes Linnaeus, 1758
         suboscines see Suborder Suboscines
           Tyranni see Suborder Tyranni
             Family Tyrannidae Vigors, 1825 - tyrant-flycatchers
               Genus Rhynchocyclus Cabanis & Heine, 1859
                 1 Rhynchocyclus brevirostris (Cabanis, 1847) - eye-ringed flatbill
                 2 Rhynchocyclus olivaceus (Temminck, 1820) - olivaceous flatbill
                 3 Rhynchocyclus pacificus (Chapman, 1914)
                 4 Rhynchocyclus fulvipectus (P.L. Sclater, 1860) - fulvous-breasted flatbill