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
       Pici see Suborder Pici Meyer & Wolf, 1810
         Family Ramphastidae Vigors, 1825 - toucans and barbets
           Subfamily Lybiinae del Hoyo et al., 2014
             Genus Gymnobucco Bonaparte, 1850
               1 Gymnobucco bonapartei Hartlaub, 1854 - grey-throated barbet
               2 Gymnobucco sladeni Ogilvie-Grant, 1907 - Sladen's barbet
               3 Gymnobucco peli Hartlaub, 1857 - bristle-nosed barbet
               4 Gymnobucco calvus (Lafresnaye, 1841) - naked-faced barbet